This root form (lemma) is used in 2 different forms in the NT: Θαδδαῖον (AMS), Θαδδαῖος (NMS).
It is glossed in 1 way: ‘Thaddaios’.
OET MARK 3:18 Greek word=Θαδδαῖον (Thaddaion) Morphology=AMS English gloss=‘Thaddaios’ SR GNT MARK 3:18 word 29
OET MAT 10:3 Greek word=Θαδδαῖος (Thaddaios) Morphology=NMS English gloss=‘Thaddaios’ SR GNT MAT 10:3 word 18