2. (adj)earnest, sincere, solemn characterized by a firm and humorless belief in the validity of your opinions Synonyms: dear, heartfelt, businesslike, sincere, grave, sedate, earnest, sober, devout, solemn Antonyms: frivolous, unctuous, fulsome, insincere, specious, fawning, hypocritical, buttery, oleaginous, obsequious, feigned, toadyish, false, meretricious, bootlicking, gilded, dissimulative, soapy, smarmy, oily, sycophantic, plausible
Synonyms, Thesaurus & Antonyms of 'sincere'
English Synonyms and Antonyms
1. sincere A candid statement is meant to be true to the real facts and just to all parties; a fair statement is really so. Fair is applied to the conduct; candid is not; as, fair treatment, "a fair Synonyms: candid, aboveboard, honest, open, truthful, artless, impartial, simple, unbiased, fair, ingenuous, sincere, unprejudiced, frank, innocent, straightforward, unreserved, guileless, naive, transparent, unsophisticated Antonyms: adroit, cunning, diplomatic, intriguing, sharp, subtle, artful, deceitful, foxy, knowing, shrewd, tricky, crafty, designing, insincere, maneuvering, sly, wily
Synonyms for sincere 
