Abbott-Smith Manual Greek Lexicon
ἄγνοια (G52)
4 ἄγνοια , -ας, ἡ ( ἀγνοέω ), [in LXX chiefly for אָשָׁם , שְׁגָגָה ;] ignorance : Ac 3:17 17:30 , Eph 4:18 (with sense of wilful blindness; cf. MM, VGT , s.v.), I Pe 1:14 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain