Make the negative: agree
disagree
Make a noun: confident
confidence
Make a noun: perform
performance
Make a noun: compete
competition
Make a noun: Entertain
entertainment
Make a verb: deep
deepen
Make the negative: understand
misunderstand
Make a noun: arrive
arrival
Make the negative: possible
impossible
Make an adjective: care
careful / careless
Mention one prefix to make a verb
en, dis
Make an adjective: fame
famous
Make the negative: mature
immature
Make a noun: popular
popularity
Make the negative: expensive
inexpensive
Mention one suffix to make nouns
ment, ance, ion, ity, ness
Make an adjective: interest
interesting / interested
Mention a suffix to make an adjective
ous, al, ful, less, ing, ed