Insincere (adjective)

Not genuine or sincere; hypocritical.

Origin:

Insincere is derived from the latin word "insincerus" meaning not sincere or not genuine.

Examples:

1. The politician"s insincere apology did little to assuage the public"s anger.
2. The employee's insincere attitude towards their work was obvious to everyone.
3. The student's insincere effort was quickly noticed by the teacher.
4. The actor's insincere performance failed to impress the critics.
5. The businessman's insincere promises left the investors feeling cheated.