Ardent (adj.) very enthusiastic, impassioned syn.- intense, zealous, fervent, avid ant.-indifferent, stolid, phlegmatic, apathetic Sentence- The ardent of the boy's quest for peace inspired people.
Assiduous (adj.) persistent attentive, diligent syn.- industrious, unremitting, sedulous Ant.- lazy, lackadaisical, shiftless Sentence- Joe was assiduous in finding the missing person
Brash (adj.) prone to act in a hasty manner; impudent syn.- rash, impetuous, brazen Ant.- prudent, wary, circumspect Sentence- The brash women was noticed my her management
Capricious (adj.) subject to whims or passing fancies Syn.- impulsive, fickle, unpredictable, mercurial Ant.- constant, steady, unwavering The weather here is capricious, because one day its cold and the next its warm.
Chastise (v.) to inflict physical punishment as a means of correction Syn.- discipline, censure Ant.- commend, reward The dad chastise the kid who was getting punished for his wrongs
copious (adj.) abundant; plentiful; wordy, verbose Syn.- ample, profuse, bountiful Ant.- inadequate, meager, scanty, concise The copious amount of food meant we could feed a great amount of people