insincere
Definitions
Not expressing or showing true feelings; hypocritical.
Lacking in sincerity or genuineness; feigned.
Examples
His apology felt completely insincere, as if he were just saying the words to avoid further conflict.
She offered an insincere smile that didn't reach her eyes, making everyone in the room feel uncomfortable.
It is difficult to trust someone who is known for making insincere promises to gain favor.
Synonyms
dishonest deceitful hypocritical two-faced artificial phony duplicitous