ROGET THESAURUS
whitewasher
Flatterer
N
flatterer, adulator, eulogist, euphemist, optimist, encomiast, laudator,
whitewasher, toady, toadeater, sycophant, courtier, Sir Pertinax MacSycophant, flaneur, proneur, puffer, touter, claqueur, clawback, earwig, doer of dirty work, parasite, hanger-on, yes-man, suckup, ass-kisser, brown-noser, teacher's pet, pessimum genus inimicorum laudantes.