SYN: Expert, adroit, handy, master, performer, professor, artist.
ANT: Awkward, clumsy, inexpert, tyro, novice, lubber, blunderer.
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KEY: Adequate.
SYN: Equal, sufficient, fit, satisfactory, full, competent, capable, able.
ANT: Unequal, insufficient, incompetent, inadequate.
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KEY: Adhere.
SYN: Stick, cohere, cleave, hold, attach, unite, fix, join, cling.
ANT: Disunite, part, separate, divide, secede, sunder, sever.