1: ἐξίστημι
(Strong's #1839 — Verb — existemi — ex-is'-tay-mee )

primarily and lit. means "to put out of position, displace;" hence, (a) "to amaze," Luke 24:22 (for AV, "make ... astonished"); Acts 8:9,11 (AV, "bewitched"); or "to be amazed, astounded," Matthew 12:23; Mark 6:51; (b) "to be out of one's mind, to be beside oneself," Mark 3:21; 2—Corinthians 5:13 , in the latter of which it is contrasted with sophroneo, "to be of a sound mind, sober." See AMAZE.

2: μαίνομαι
(Strong's #3105 — Verb — mainomai — mah'ee-nom-ahee )

"to be mad, to rave," is said of one who so speaks that he appears to be out of his mind, Acts 26:24 , translated "thou art beside thyself," AV; RV, "thou art mad." In Acts: 26:25; John 10:20; Acts 12:15; 1—Corinthians 14:23 , both versions use the verb to be mad. See MAD.

2—Corinthians 11:23FOOL