1. the quality of being not self-conscious; unawareness of yourself or of others' views of yourself; - Example: "he had the unselfconsciousness of a child"
WordNet (r) 3.0 (2006):
unselfconsciousness
n 1: the quality of being not self-conscious; unawareness of
yourself or of others' views of yourself; "he had the
unselfconsciousness of a child" [ant: self-consciousness]