Nay
Vine's Expository Dictionary of NT Words [1]
"no, not," expressing a negation absolutely, is rendered "nay," e.g., in Matthew 5:37; 13:29; John 7:12 , AV (RV, "not so"); Acts 16:37; 2—Corinthians 1:17-19; James 5:12 .
a strengthened form of No. 1, is used, e.g., in Luke 12:51; 13:3,5; 16:30; Romans 3:27 .
"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; 6:8; 12:22; in Hebrews 3:16 , RV, "nay" (AV, "howbeit").
(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.
Webster's Dictionary [2]
(1): ( adv.) No; - a negative answer to a question asked, or a request made, now superseded by no. See Yes.
(2): ( adv.) Not this merely, but also; not only so, but; - used to mark the addition or substitution of a more explicit or more emphatic phrase.
(3): ( v. t. & i.) To refuse.
(4): ( n.) Denial; refusal.
(5): ( n.) a negative vote; one who votes in the negative.
King James Dictionary [3]
NAY, adv. a contracted word, to deny
1. No a word that expresses negation.
I tell you nay, but except ye repent, ye shall all likewise perish. Luke 13 .
2. It expresses also refusal.
He that will not when he may, When he would he shall have nay.
In these senses it is now rarely used no being substituted.
3. Not only so not this alone intimating that something is to be added y way of amplification. He requested an answer nay, he urged it.
NAY, n. Denial, refusal.
NAY, To refuse. Not in use