Insincere, a.
Etymology: [L. insincerus. See In- not, and Sincere.]
1. Not being in truth what one appears to be; not sincere; dissembling; hypocritical; disingenuous; deceitful; false; -- said of persons; also of speech, thought; etc.; as, insincere declarations.
2. Disappointing; imperfect; unsound. [Obs.] To render sleep's soft blessings insincere. Pope.
Syn. -- Dissembling; hollow; hypocritical; deceptive deceitful; false; disingenuous; untrustworthy.
Shades of meaning
Fernald lists insincere only as an antonym, under candid.
He lists it without comment; the entries above explain its neighbors.
Synonyms
none given