awkward blankminded callow dumb empty empty-headed gauche green groping ignorant inane incognizant inexpectant inexperienced innocent know-nothing naive nescient nonexpectant oblivious raw simple strange to tentative unacquainted unadmonished unadvised unanticipating unanticipative unapprized unaware uncomprehending unconversant unenlightened unexpecting unfamiliar unforewarned unguessing unilluminated uninitiated uninstructed unintelligent unknowing unposted unprepared unready unripe unsure unsuspecting unversed unwarned unwitting vacuous