G0657
ἀποτάσσω
to leave
ἀπο-τάσσω [in LXX: Ecc.2:20 (יָאַשׁ pi.), I Est.6:27, Jer.20:2, 1-18; 1Ma.4:1-61 * ;] to set apart. Mid., in late Gk. (El., § 37, 1; Swete, Mk., 136 f.; MM, e. dative, __(a) to take leave of: Mrk.6:46, Luk.9:61, Act.18:18, 21, 2Co.2:13; __(b) to forsake: Luk.14:33.† (AS)
Full Thayer's lexicon entry
ἀποτάσσομαι — apotássomai
ἀποτάσσω: to set apart, to separate; in the N. T. only in the middle ἀποτάσσομαι; 1 aorist ἀπεταξαμην;
1. properly, to separate oneself, withdraw oneself from anyone, i. e. to take leave of, bid farewell to (Vulg.valefacio (etc.)): τίνι, Mar 6:46; Luk 9:61; Act 18:18; Act 18:21 (here L T Tr omit the dative); 2Co 2:13. (That the early Greek writers never so used the word, but said ἀσπάζεσθαι τινα, is shown by Lobeck ad Phryn., p. 23f; (cf. Winers Grammar, 23 (22); Buttmann, 179 (156)).)
2. tropically, to renounce, forsake: τίνι, Luk 14:33. (So also Josephus, Antiquities 11, 6, 8; Phil. alleg. iii. § 48; ταῖς τοῦ φροντισι, Eusebius, h. e. 2, 17, 5; (τῷ βίῳ, Ignatius ad Philadelph. 11, 1 [ET]; cf. Hermas, mand. 6, 2, 9 [ET]; Clement of Rome, 2Co 6:1-18; 2Co 4:1-18; 2Co 5:1-21 [ET] where see Gebh. and Harn. for other examples, also Sophocles' Lexicon, under the word).)
6 occurrences
Mark (1), Luke (2), Acts (2), II Corinthians (1)