unfamiliar

unfamiliar
adj.
New: P. and V. νέος, καινός, P. ἀήθης, V. νεόκοτος, Ar. and V. νεοχμός.
Unknown: Ar. and V. ἄγνωτος, P. and V. ἄγνως.
Unfamiliar with: P. and V. ἄ̆πειρος (gen.), ἀ̆μᾰθής (gen.), P. ἀήθης (gen.), ἀνεπιστήμων (gen.).

unfamiliar:

1. ăliēnus u. with literature, a literis alienus, Cic. Rosc. Am. 16, 46: u. with natural philosophy, in physicis a., id. Fin. 1, 6, 17: v. IGNORANT.

2. Join: peregrinus atque hospes, id. de Or. 1, 50, 218: v. STRANGE, IGNORANT, KNOW, NOT TO.

imperitus
inexperienced, unversed, unfamiliar, not knowing, unacquainted with, unskilled, ignorant
ignotus2
unknown, unrecognized, unfamiliar; ignorant
insolitus
unaccustomed, unused, unfamiliar, strange

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appearing fewer than 50 times

desuetus
disused, laid aside, unfamiliar, out of use, obsolete