insincere Meaning, Definition & Usage

  1. adjective lacking sincerity
    • a charming but thoroughly insincere woman
    • their praise was extravagant and insincere

WordNet

In`sin*cere" adjective
Etymology
L. insincerus. See In- not, and Sincere.
Definitions
  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.

Webster 1913