AFFIXATION: Prefixes, Suffixes & Word Formation

Exam objective: Understand how prefixes and suffixes change meaning and grammatical function, identify less predictable word formations, and produce accurate answers in Cambridge C1 Word Formation (Part 3).

1. PREFIXATION

Core rule: A prefix is added to the beginning of a word to change its meaning. It usually does not change the grammatical category.

A. Essential negative prefixes

• un-: unfair, unconventional, unreliable

• in-: inaccurate, insufficient, inappropriate

• im-: impossible, impatient, impractical

• il-: illegal, illogical, illegitimate

• ir-: irrelevant, irregular, irresponsible

• dis-: dishonest, dissatisfied, disadvantageous

• non-: non-existent, non-essential, non-verbal

• mis-: misleading, misinterpret, miscalculate

Important: The negative prefix is not always predictable. Learn the established form.

Examples:

• irresponsible (not unresponsible)

• inappropriate (not unappropriate)

• dissatisfied (not unsatisfied in every context; both exist but usage differs)

• illegitimate (not inlegitimate)

B. Other high-value C1 prefixes

Opposition and reversal

• anti-: anti-government, anti-inflammatory

• counter-: counterproductive, counterargument

• de-: decentralise, deregulate

• dis-: disconnect, disapprove

• un-: undo, underestimate

Excess and insufficiency

• over-: overestimate, overconfident, overcrowded

• under-: underestimate, underdeveloped, underpaid

• ultra-: ultramodern, ultra-conservative

• hyper-: hypersensitive, hyperactive

Time and repetition

• pre-: predetermined, pre-existing

• post-: post-war, postgraduate

• re-: reconsider, restructure, reassess

• ex-: ex-president, ex-colleague

Number and scale

• bi-: bilingual, bilateral

• multi-: multicultural, multinational

• semi-: semi-conscious, semi-structured

• micro-: microeconomic, microscopic

• macro-: macroeconomic, macro-level

C. Practice 1 – Choose the correct prefix

Complete each word using an appropriate negative prefix.

1. The committee considered the proposal completely _____acceptable.

2. His explanation was so _____logical that nobody could follow his reasoning.

3. The company was criticised for its _____responsible handling of public funds.

4. The figures provided by the organisation were found to be _____accurate.

5. The employee was dismissed for repeatedly _____interpreting confidential information.

6. The government's response was considered _____adequate by independent observers.

7. The organisation has introduced measures to prevent _____legal activities.

8. It would be _____appropriate to discuss the matter before all the evidence is available.

9. The report contained several _____relevant observations.

10. The two countries signed a _____lateral trade agreement.

D. Practice 2 – Word formation

Complete the sentences using the correct form of the word in capitals.

11. The government has been accused of __________ the seriousness of the economic situation. (ESTIMATE)

12. The organisation was criticised for its __________ approach to employee welfare. (RESPONSIBLE)

13. The figures were considered __________ because they did not reflect the actual situation. (ACCURATE)

14. The committee decided to __________ the proposal following further consultation. (CONSIDER)

15. The organisation operates in several countries and has a highly __________ workforce. (CULTURE)

16. The decision was widely regarded as __________ and potentially damaging. (PRODUCT)

2. SUFFIXATION

Core rule: A suffix is added to the end of a word. Unlike prefixes, suffixes frequently change the grammatical category.

A. Noun-forming suffixes

Learn these common C1 patterns:

• -tion / -sion: regulate → regulation; expand → expansion

• -ment: achieve → achievement; assess → assessment

• -ance / -ence: perform → performance; exist → existence

• -ity: diverse → diversity; responsible → responsibility

• -ness: aware → awareness; effective → effectiveness

• -ship: leader → leadership; partner → partnership

• -hood: likely → likelihood; neighbour → neighbourhood

• -ism: realistic → realism; critic → criticism

• -cy: efficient → efficiency; accurate → accuracy

B. Adjective-forming suffixes

• -able / -ible: rely → reliable; access → accessible

• -al: environment → environmental; profession → professional

• -ful: success → successful; meaning → meaningful

• -less: care → careless; meaning → meaningless

• -ive: attract → attractive; persuade → persuasive

• -ous: ambition → ambitious; danger → dangerous

• -ic: economy → economic; science → scientific

• -ent / -ant: depend → dependent; tolerate → tolerant

• -ary: revolution → revolutionary; imagine → imaginary

C. Verb-forming suffixes

• -ise / -ize: modern → modernise; legal → legalise

• -ify: simple → simplify; identity → identify

• -en: strength → strengthen; wide → widen

• -ate: active → activate; valid → validate

D. Adverb-forming suffixes

• -ly: considerable → considerably; apparent → apparently

• -ward(s): forward, backwards, afterwards

• -wise: otherwise, likewise, clockwise

Important spelling changes:

• responsible → responsibility

• possible → possibility

• accurate → accuracy

• efficient → efficiency

• explain → explanation

• maintain → maintenance

• relevant → relevance

• strong → strengthen

E. Practice 3 – Word formation

Complete each gap with the correct form of the word in capitals.

17. The government has introduced new measures to improve economic __________. (STABLE)

18. The report provides a detailed __________ of the organisation's financial performance. (ANALYSE)

19. There is considerable __________ surrounding the proposed changes. (CERTAIN)

20. The company has demonstrated a remarkable degree of __________ in responding to market changes. (FLEXIBLE)

21. The manager questioned the __________ of the evidence presented. (RELY)

22. The organisation is committed to promoting greater __________ in the workplace. (EQUAL)

23. The findings were particularly __________ because they contradicted previous research. (SIGNIFY)

24. The government intends to __________ the current administrative system. (SIMPLE)

25. The proposal was rejected because it was financially __________. (VIABLE)

26. The organisation has experienced considerable __________ over the past decade. (GROW)

27. The new system should significantly improve operational __________. (EFFICIENT)

28. The committee expressed serious __________ about the lack of transparency. (CONCERN)

3. WORD FAMILIES & MULTIPLE DERIVATIONS

Core rule: In CAE Part 3, the challenge is often identifying the correct grammatical form rather than simply knowing the meaning.

Learn the different forms of a word family.

A. High-value C1 word families

1. APPLY

• apply (verb)

• application (noun)

• applicant (noun)

• applicable (adjective)

• applicable (adjective)

• inapplicable (adjective)

2. RELY

• rely (verb)

• reliance (noun)

• reliable (adjective)

• unreliable (adjective)

• reliably (adverb)

3. PERCEIVE

• perceive (verb)

• perception (noun)

• perceptive (adjective)

• perceptively (adverb)

4. ASSUME

• assume (verb)

• assumption (noun)

• assumed (adjective)

• presumably (adverb)

5. COMPEL

• compel (verb)

• compulsion (noun)

• compulsory (adjective)

• compulsive (adjective)

• compulsively (adverb)

6. SIGNIFY

• signify (verb)

• significance (noun)

• significant (adjective)

• significantly (adverb)

• insignificant (adjective)

7. TEND

• tend (verb)

• tendency (noun)

• tendentious (adjective)

8. JUSTIFY

• justify (verb)

• justification (noun)

• justified (adjective)

• unjustified (adjective)

9. CONVINCE

• convince (verb)

• conviction (noun)

• convincing (adjective)

• unconvinced (adjective)

10. SUSTAIN

• sustain (verb)

• sustainability (noun)

• sustainable (adjective)

• unsustainable (adjective)

B. Practice 4 – Word formation

29. There is a growing __________ among consumers to prioritise environmentally friendly products. (TEND)

30. The committee questioned the __________ of the original proposal. (JUSTIFY)

31. The results were considerably more __________ than the researchers had anticipated. (SIGNIFY)

32. The organisation has become increasingly __________ on external funding. (RELY)

33. Her ability to understand complex social issues demonstrates considerable __________. (PERCEIVE)

34. Attendance at the training programme is __________ for all newly appointed staff. (COMPEL)

35. The company's long-term strategy is based on the principle of environmental __________. (SUSTAIN)

36. The explanation was entirely __________ and failed to convince the committee. (CONVINCE)

37. The organisation has a strong __________ to providing equal opportunities. (COMMIT)

38. It is __________ that the government will reverse its decision without further pressure. (LIKELY)

4. NEGATIVE & DOUBLE SUFFIXATION

Core rule: Some C1 word formations require more than one change. You may need to add a prefix and a suffix, or transform a word through several stages.

Examples:

• responsible → irresponsible → irresponsibility

• possible → impossible → impossibility

• understand → misunderstand → misunderstanding

• agree → disagree → disagreement

• employ → unemployed → unemployment

• satisfy → dissatisfied → dissatisfaction

• mature → immature → immaturity

• regular → irregular → irregularity

• relevant → irrelevant → irrelevance

A. Practice 5 – Complex word formation

Use the word in capitals to complete each sentence.

39. The committee expressed its __________ with the way the investigation had been conducted. (SATISFY)

40. The company's financial __________ eventually resulted in its closure. (STABLE)

41. The proposal was rejected because of its __________ to the current economic situation. (RELEVANT)

42. The manager's behaviour demonstrated a considerable degree of __________. (MATURE)

43. There is growing __________ about the government's ability to manage public finances. (SATISFY)

44. The organisation was criticised for its __________ towards environmental regulations. (RESPONSIBLE)

45. The widespread __________ of the new policy created additional difficulties. (UNDERSTAND)

46. The proposed changes could lead to further __________ in the workplace. (EQUAL)

47. The government has been accused of __________ the potential consequences of its actions. (ESTIMATE)

48. The findings highlighted the __________ of relying exclusively on outdated information. (POSSIBLE)

5. CAMBRIDGE C1 – PART 3 EXAM PRACTICE

Full exam-style word formation

Instructions: Read the text and use the word given in capitals to form a word that fits each gap. There is an example at the beginning (0).

The Challenges of Modern Leadership

Leadership has become increasingly demanding in today's rapidly changing business environment. Modern managers are expected to demonstrate considerable (0) FLEXIBILITY (FLEXIBLE) while maintaining high standards of professional conduct.

However, effective leadership involves more than simply possessing technical (49) __________ (COMPETENT). It also requires an understanding of human behaviour and the ability to respond (50) __________ (APPROPRIATE) to challenging circumstances.

One of the most common mistakes made by inexperienced managers is their (51) __________ (ABLE) to recognise the importance of communication. This can result in considerable (52) __________ (SATISFY) among employees and ultimately affect overall productivity.

Another significant challenge is the increasing (53) __________ (DEPEND) on technology. Although technological developments can improve operational (54) __________ (EFFICIENT), excessive reliance on automated systems may lead to unexpected difficulties.

Managers must also be aware of the (55) __________ (LIKELY) that employees will resist changes they perceive as unnecessary. A lack of consultation can create considerable (56) __________ (CERTAIN) and undermine confidence in management.

Ultimately, successful leadership depends on a combination of experience, emotional (57) __________ (INTELLIGENT) and the willingness to accept constructive criticism. These qualities are particularly important in organisations operating in highly (58) __________ (COMPETE) markets.

6. CAMBRIDGE C1 – ADVANCED MIXED PRACTICE

Choose the correct answer or form the appropriate word.

A. Multiple-choice word formation

59. The committee questioned the _____ of the proposed changes.

A. practical

B. practicality

C. practically

D. practicable

60. His argument was fundamentally _____ because it relied on inaccurate information.

A. logical

B. illogical

C. unlogical

D. dislogical

61. The organisation has made a considerable _____ to improving workplace conditions.

A. commit

B. committed

C. commitment

D. committing

62. The government has introduced measures to _____ the economy.

A. stable

B. stability

C. stabilise

D. stabilisation

63. The results were _____ different from those originally anticipated.

A. considerable

B. considerably

C. consideration

D. considering

B. Advanced word formation

64. The organisation's continued success depends on its ability to adapt to changing circumstances. (ADAPT)

65. The committee found the manager's explanation completely unconvincing and lacking in __________. (CREDIBLE)

66. The widespread __________ of the regulations has created confusion among businesses. (INTERPRET)

67. The company has been criticised for its apparent __________ to acknowledge its mistakes. (WILLING)

68. The proposal was rejected because it was considered economically __________. (JUSTIFY)

69. The increasing __________ of the workforce has created new challenges for employers. (DIVERSE)

70. The manager was praised for dealing with the situation both tactfully and __________. (PROFESSION)

7. ANSWER KEY

Answer key

1. Prefixation

1. unacceptable

2. illogical

3. irresponsible

4. inaccurate

5. misinterpreting

6. inadequate

7. illegal

8. inappropriate

9. irrelevant

10. bilateral

11. underestimating

12. irresponsible

13. inaccurate

14. reconsider

15. multicultural

16. unproductive

2. Suffixation

17. stability

18. analysis

19. uncertainty

20. flexibility

21. reliability

22. equality

23. significant

24. simplify

25. unviable

26. growth

27. efficiency

28. concern

3. Word families

29. tendency

30. justification

31. significant

32. reliant

33. perceptiveness

34. compulsory

35. sustainability

36. unconvincing

37. commitment

38. unlikely

4. Complex word formation

39. dissatisfaction

40. instability

41. irrelevance

42. immaturity

43. dissatisfaction

44. irresponsibility

45. misunderstanding

46. inequality

47. underestimating

48. impossibility

5. Cambridge Part 3

49. competence

50. appropriately

51. inability

52. dissatisfaction

53. dependence

54. efficiency

55. likelihood

56. uncertainty

57. intelligence

58. competitive

6. Mixed practice

59. B – practicality

60. B – illogical

61. C – commitment

62. C – stabilise

63. B – considerably

64. adaptability

65. credibility

66. misinterpretation

67. unwillingness

68. unjustifiable

69. diversity

70. professionally

C1 exam strategy

For Cambridge Part 3, use this quick process:

1. Identify the grammatical category: Do you need a noun, adjective, verb or adverb?

2. Check the meaning: Is the sentence positive, negative or expressing opposition?

3. Check the spelling: Look for changes such as -y → -i, -e → -ation and doubled consonants.

4. Check the complete sentence: Does your answer fit grammatically and semantically?

5. Check for multiple affixes: Some answers require a prefix and a suffix.

The most important skill: Don't simply memorise word families. Learn to move between grammatical forms quickly and recognise when a negative prefix or additional suffix is required.