This root form (lemma) is used in 3 different forms in the NT: ἀγνοίας (GFS), ἀγνοίᾳ (DFS), ἄγνοιαν (AFS).
It is glossed in 2 different ways: ‘of ignorance’, ‘ignorance’.
OET ACTS 3:17 Greek word=ἄγνοιαν (agnoian) Morphology=AFS English gloss=‘ignorance’ SR GNT ACTS 3:17 word 11
OET ACTS 17:30 Greek word=ἀγνοίας (agnoias) Morphology=GFS English gloss=‘of ignorance’ SR GNT ACTS 17:30 word 6
OET EPH 4:18 Greek word=ἄγνοιαν (agnoian) Morphology=AFS English gloss=‘ignorance’ SR GNT EPH 4:18 word 13
OET 1PET 1:14 Greek word=ἀγνοίᾳ (agnoia) Morphology=DFS English gloss=‘ignorance’ SR GNT 1PET 1:14 word 10