Synonyms to unfamiliar with

disaccustomed, a stranger to, ignorant, inexperienced, new to, rusty, unaccustomed, unacquainted with, unconversant with, unhabituated, unhardened, uninured, unpracticed, unseasoned, untrained, unused, unused to, unwonted, weaned, a novice at, awkward, benighted, blankminded, boorish, brainless, callow, crude, 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, ingenuous, innocent, insensate, irrational, know-nothing, lackbrained, lean-minded, lean-witted, lowbrow, mindless, naive, nescient, not bright, oblivious, of little brain, pea-brained, pin-brained, raw, reasonless, rude, senseless, simple, slackminded, slackwitted, strange to, tentative, unaccustomed to, unacquainted, unapprized, unaware, uncivil, uncomprehending, unconscious, unconversant, uncouth, uncultured, undeveloped, uneducated, unenlightened, unexperienced