This root form (lemma) is used in 2 different forms in the NT: καταδουλοῖ (IPA3··S), καταδουλώσουσιν (IFA3··P).
It is glossed in 2 different ways: ‘is enslaving’, ‘they will_be enslaving’.
OET 2COR 11:20 Greek word=καταδουλοῖ (katadouloi) Morphology=IPA3··S English gloss=‘is enslaving’ SR GNT 2COR 11:20 word 6
OET GAL 2:4 Greek word=καταδουλώσουσιν (katadoulōsousin) Morphology=IFA3··P English gloss=‘they will_be enslaving’ SR GNT GAL 2:4 word 20