atypical (
http://definr.com/atypical)
adj 1: deviating from or not conforming to type; "atypical
behavior..not the accepted type of response that we
expect from children"- G.E.Gardner [syn:
untypical]
[ant:
typical]
2: deviating from what is usual or common or to be expected;
often somewhat odd or strange; "these days large families
are atypical"; "highly irregular behavior" [syn:
irregular]
3: not conforming to type; "showed atypical agility"