n. 1. an aberrant state or condition. Syn. -- aberrance, aberrancy, aberration. [ WordNet 1.5 ]
2. deviate behavior. Syn. -- deviation. [ WordNet 1.5 ]
a. 1. Deviating. [ Obs. ] [ 1913 Webster ]
2. having behavior or characteristics differing from that which is normal or expected, especially in an undesirable or socially disapproved manner; as, deviant behavior. Syn. -- deviate. [ PJC ]