Synonyms to unaccustomed to

ignorant, a novice at, a stranger to, awkward, benighted, blankminded, boorish, brainless, callow, crude, disaccustomed, discourteous, dumb, empty, empty-headed, foolish, fresh, gauche, green, green as grass, groping, gross, headless, ill-mannered, illiterate, immature, impolite, in the dark, inane, incognizant, inept, inexperienced, ingenuous, innocent, insensate, irrational, know-nothing, lackbrained, lean-minded, lean-witted, lowbrow, mindless, naive, nescient, new to, not bright, oblivious, of little brain, pea-brained, pin-brained, raw, reasonless, rude, rusty, senseless, simple, slackminded, slackwitted, strange to, tentative, unaccustomed, unacquainted, unacquainted with, unapprized, unaware, uncivil, uncomprehending, unconscious, unconversant, unconversant with, uncouth, uncultured, undeveloped, uneducated, unenlightened, unexperienced, unfamiliar, unfamiliar with, unfledged, ungifted, unhabituated, unhardened, unilluminated, uninformed, uninitiated, uninitiated in, uninstructed, unintellectual, unintelligent, uninured, unknowing, unlearned, unlettered, unmatured, unposted, unpr