adj. 25B6; adjective
an unfamiliar part of the city : UNKNOWN, new, strange, foreign, alien.
the unfamiliar sounds : UNUSUAL, uncommon, unconventional, novel, different, exotic, unorthodox, odd, peculiar, curious, uncharacteristic, anomalous, out of the ordinary.
investors unfamiliar with the stock market : UNACQUAINTED, unused, unaccustomed, unconversant, inexperienced, uninformed, unenlightened, ignorant, new to, a stranger to.