unpracticed in, unfamiliar with, inexperienced in, unversed in, unconversant with, unacquainted with;
archaic strange.
▷antonyms accustomed.
2 he showed unaccustomed emotion as he spoke:
unusual, unfamiliar, uncommon, unwonted, new, exceptional, out of the ordinary, extraordinary, special, remarkable, singular, rare, surprising, strange, abnormal, atypical, out of the way, curious, peculiar.