A.unknown, “τινί” Od.2.175; unheard of, forgotten, Mimn 5.7; “ἄ. ἐς γῆν” E.IT94; unfamiliar, Arist.Top.149a5 (Comp.).
2. not to be known, “ἄγνωστόν τινα τεύχειν” Od.13.191; πάντεσσι ib.397; ἀγνωστστατοι γλῶσσαν most unintelligible in tongue, Th.3.94.
3. not an object of knowledge, unknowable, “ἄλογα καὶ ἄ.” Pl.Tht.202b; “ἡ ὕλη ἄ. καθ᾽ αὑτήν” Arist.Metaph.1036a9; in Comp., harder to know, ib. 995a2. Adv. “-τως” Procl.in Alc.p.52C.
4. as the name of a divinity at Athens, νὴ τὸν Ἄγνωστον Ps.-Luc.Philopatr.9, cf. Act.Ap.17.23; in pl., “θεῶν . . ὀνομαζομένων ἀ.” Paus.1.1.4.