unaccustomed

adjective

1 she was unaccustomed to being told what to do:

unused, not used, new, fresh, a stranger;

unpractised 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.

▷antonyms habitual, usual.

unaccustomed Oxford Dictionary of English