Nay - Vine's Expository Dictionary of New Testament Words
Nay
[ 1,,G3756, ou ]no, not," expressing a negation absolutely, is rendered "nay," e.g., in Matthew 5:37; Matthew 13:29; John 7:12, AV (RV, "not so"); Acts 16:37; 2 Corinthians 1:17-19; James 5:12.
[ 2,,G3780, ouchi ]
a strengthened form of No. 1, is used, e.g., in Luke 12:51; Luke 13:3, Luke 13:5; Luke 16:30; Romans 3:27.
[ 3,,G235, alla ]
"but," to mark contrast or opposition, is rendered "nay" in Romans 3:31, RV, "nay" (AV, "yea"); in Romans 7:7, RV, "howbeit" (AV, "nay"); Romans 8:37; 1 Corinthians 3:2, RV; 1 Corinthians 6:8; 1 Corinthians 12:22; in Hebrews 3:16, RV, "nay" (AV, "howbeit").
[ 4,,G3304, menounge ]
(i.e., men oun ge), "nay rather," is rendered "nay but" in Romans 9:20 (in Romans 10:18; Philippians 3:8, "yea verily," AV, "yea doubtless"). See YEA.