Insincere; sarcastic.
Done by moving the hand (and arm) from below.
Sly, dishonest, corrupt, cheating.
An underhanded compliment is actually criticism.
Secret; surreptitious.
His underhanded trick backfired and he was disqualified.
Understaffed.
Devious people, collectively.
In an underhanded manner.
Dryly humorous; sardonic or bitterly ironic.
Deviating from the right direction; misdirected; out of place.
Turned away, contorted (of the face or body).
Twisted, bent, crooked.
Distortion.
To twist or contort (the body, face, etc.).