List of unfamiliar with synonyms and unfamiliar with related words.
a novice at, a stranger to, callow, disaccustomed, fresh, green, green as grass, ignorant, immature, inexperienced, new to, raw, rusty, unaccustomed, unaccustomed to, unacquainted with, unconversant, unconversant with, undeveloped, unexperienced, unfledged, unhabituated, unhardened, uninitiated in, uninured, unmatured, unpracticed, unpracticed in, unripe, unseasoned, unskilled in, untrained, untried, unused, unused to, unversed, unversed in, unwonted, weaned