adj ·3 syllables ·Moderate ·High school level

Definitions

Adjective

1. 1
   Not genuinely meaning what has been expressed; not sincere; artificial; factitious.

   "Janice's furious glare showed that her apology was insincere."

Adjective

1. 1
   lacking sincerity wordnet

Synonyms

All synonyms

falsehypocriticalplausiblespecioussycophanticunctuous

Antonyms

All antonyms

honestsincereunrestrained

Example

More examples

"The letter sounds forced, what is worse, insincere."

Etymology

From Latin insincerus.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.