Ah!
From BiblePortal Wikipedia
Vine's Expository Dictionary of NT Words [1]
1: Οὐά (Strong'S #3758 — interjective — oua — oo-ah' )
an interjection of derision and insult, is translated "Ha!" in Mark 15:29 , RV.
2: Ἔα (Strong'S #1436 — Interjection — ea — eh'-ah )
an interjection of surprise, fear and anger, was the ejaculation of the man with the spirit of an unclean demon, Luke 4:34 , RV; the AV renders it "Let us alone" (see Rv , marg.).
Easton's Bible Dictionary [2]
Psalm 35:25 Isaiah 1:4,24 Jeremiah 1:6 22:18 Mark 15:29