Dictionary entry

ἄγνωστος

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament with Strong's

** ἄγνωστος, -ον

(< γινώσκω), [in LXX: Wi 11:18 18:3, II Mac 1:19 2:7 (Cremer, 157)*;]

unknown: Ac 17:23 (cf. MM, VGT, s.v.).†