Roget's Thesaurus of English Words and Phrases by Peter Mark Roget

935. Flatterer — N. flatterer, adulator; eulogist, euphemist;

optimist, encomiast, laudator [Lat.], whitewasher. toady, toadeater†; sycophant, courtier, Sir Pertinax MacSycophant; flaneur [Fr.], proneur [Fr.]; puffer, touter†, claqueur [Fr.]; clawback†, earwig, doer of dirty work; parasite, hanger-on &c (servility) 886. yes-man, suckup, ass-kisser [Vulg.], brown-noser [Vulg.], teacher's pet. Phr. pessimum genus inimicorum laudantes [Lat.] [Tacitus].