This root form (lemma) is used in 2 different forms in the NT: ὑπερῴῳ (DNS), ὑπερῷον (ANS).
It is glossed in 2 different ways: ‘an upper_room’, ‘upper_room’.
OET ACTS 1:13 Greek word=ὑπερῷον (huperōion) Morphology=ANS English gloss=‘upper_room’ SR GNT ACTS 1:13 word 9
OET ACTS 9:37 Greek word=ὑπερῴῳ (huperōōi) Morphology=DNS English gloss=‘an upper_room’ SR GNT ACTS 9:37 word 17
OET ACTS 9:39 Greek word=ὑπερῷον (huperōion) Morphology=ANS English gloss=‘upper_room’ SR GNT ACTS 9:39 word 14
OET ACTS 20:8 Greek word=ὑπερῴῳ (huperōōi) Morphology=DNS English gloss=‘upper_room’ SR GNT ACTS 20:8 word 8