Unsincere vs. Insincere
Unsincere and Insincere Definitions
Not sincere; not genuine
An insincere apology.
Not sincere or pure; insincere.
Habitually phony or dishonest
Distrusted him as insincere.
Not genuinely meaning what has been expressed; not sincere; artificial.
Janice's furious glare showed that her apology was insincere.
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.
Disappointing; imperfect; unsound.
To render sleep's soft blessings insincere.
A charming but thoroughly insincere woman
Their praise was extravagant and insincere