A prefix goes at the start of a word and changes its meaning (happy, unhappy); a suffix goes at the end and often changes the part of speech (kind, kindness). The answer key is at the end.
Learn the rules first: Prefixes and Their Meanings: List with Examples · Suffixes and Word Formation in English with Examples
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Prefixes and Suffixes Worksheet with Answers
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A. Make the opposite with a prefix
Add un-, in-, im-, il-, ir- or dis- to make the opposite.
- happy
- possible
- legal
- regular
- agree
- correct
- honest
- patient
- appear
- responsible
B. What does the prefix mean?
Write the meaning of each prefix. The examples will help you.
- pre- (preview, prehistoric)
- re- (rewrite, rebuild)
- multi- (multicolour, multinational)
- sub- (subway, submarine)
- inter- (international, interact)
- anti- (antivirus, antisocial)
C. Add a suffix
Add a suffix to make the kind of word given in brackets.
- kind (noun)
- develop (noun)
- beauty (adjective)
- danger (adjective)
- modern (verb)
- quick (adverb)
- teach (noun for a person)
- wide (verb)
D. Use the right form
Fill in the blank with the correct form of the word in brackets.
- Her __________ (kind) touched everyone.
- The bridge is not safe; it looks __________ (danger).
- The __________ (decide) was taken by the principal.
- He answered the question __________ (correct).
- We must __________ (strong) our team before the final.
- This medicine is __________ (harm) if you take too much.
Answer Key
A. Make the opposite with a prefix
- unhappy
- impossible
- illegal
- irregular
- disagree
- incorrect
- dishonest
- impatient
- disappear
- irresponsible
B. What does the prefix mean?
- before
- again
- many
- under, below
- between, among
- against
C. Add a suffix
- kindness
- development
- beautiful
- dangerous
- modernise (or modernize)
- quickly
- teacher
- widen
D. Use the right form
- kindness
- dangerous
- decision
- correctly
- strengthen
- harmful