actuation, n. instigation, [incitement], [animation].
acumen, n. astuteness, [shrewdness], [discernment], [sharpness]. Antonyms: dullness, stupidity, [short-sightedness].
adage, n. See saying.
Adam, n. Associated words: Adamic, adamite, preadamic, preadamite, preadamitic.
adapt, v. adjust, conform.
adaptable, a. conformable, adjustable.
adaptation, n. [adjustment], conformability.
add, v. [sum up], foot up; append, [supplement], subjoin, [affix], adjoin, superadd, annex. Antonyms: subtract, [deduct], detract, [remove].
addict, v. [habituate], [accustom].
addition, n. annexation, annex, [appendage], [supplement], appendix, postscript, [wing], augmentation, adjunct, [rider]. Antonyms: subtraction, [deduction], detraction.