[syn: affected, unnatural]
The Collaborative International Dictionary of English v.0.48:
Unnatural \Un*nat"u*ral\ (?; 135), a.
Not natural; contrary, or not conforming, to the order of
nature; being without natural traits; as, unnatural crimes.
[1913 Webster]
Syn: See Factitious.
[1913 Webster] -- Un*nat"u*ral*ly, adv. --
Un*nat"u*ral*ness, n.
[1913 Webster]
WordNet (r) 3.0 (2006):
unnatural
adj 1: not in accordance with or determined by nature; contrary
to nature; "an unnatural death"; "the child's unnatural
interest in death" [ant: natural]
2: not normal; not typical or usual or regular or conforming to
a norm; "abnormal powers of concentration"; "abnormal amounts
of rain"; "abnormal circumstances"; "an abnormal interest in
food" [syn: abnormal, unnatural] [ant: normal]
3: speaking or behaving in an artificial way to make an
impression [syn: affected, unnatural] [ant: unaffected]