verb
1.
Synonyms: intensify , deepen, enhance, heighten, intensate, magnify, mount, redouble, rise, rouse
Related Word: augment, enlarge, increase, multiply; aggrandize
Contrasted words: extenuate, palliate
Antonyms: alleviate
2.
Synonyms: irritate , burn (up), exasperate, gall, get, grate, nettle, peeve, pique, provoke
Related Word: disturb, perturb, upset; annoy, bedevil
Contrasted words: calm, tranquilize
Antonyms: appease