This root form (lemma) is used in 3 different forms in the NT: πλεῖσται (NFP), πλεῖστον (ANS), πλεῖστος (NMS).
It is glossed in 2 different ways: ‘most’, ‘very_great’.
OET MARK 4:1 Greek word=πλεῖστος (pleistos) Morphology=NMS English gloss=‘very_great’ SR GNT MARK 4:1 word 20
OET MAT 11:20 Greek word=πλεῖσται (pleistai) Morphology=NFP English gloss=‘most’ SR GNT MAT 11:20 word 14
OET MAT 21:8 Greek word=πλεῖστος (pleistos) Morphology=NMS English gloss=‘very_great’ SR GNT MAT 21:8 word 3
OET 1COR 14:27 Greek word=πλεῖστον (pleiston) Morphology=ANS English gloss=‘most’ SR GNT 1COR 14:27 word 9