In`sin*cere" (?), a. [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.