SYN: Spinous, sagittate, prickly, thorny, sharp-pointed, hastate, bristly.
ANT: Obtuse, blunt, abrupt.
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KEY: Acid.
SYN: Sharp, acidulous, acetous, vinegarish.
ANT: Mellow, luscious, mealy, rich.
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KEY: Acknowledge.
SYN: Avow, admit, recognize, own, accept, profess, endorse, grant, concede, concern.
ANT: Disavow, disclaim, disown, repudiate, ignore, deny.