Of conduct, demeanour, gestures, etc.: produced under compulsion or by deliberate effort; artificial, forced, not spontaneous or natural.

Not natural or genuine in appearance or manners; affected, pretentious.

Of actions, demeanour, gestures, etc.: Affected, artificial, constrained, unnatural.

Lacking the ease, simplicity, or spontaneity of nature; artificial in appearance or effect; affected, contrived, forced.