From teleios; to complete, i.e. (literally) accomplish, or (figuratively) consummate (in character) -- consecrate, finish, fulfil, make) perfect.

see GREEK teleios

1. to carry through completely; to accomplish, finish, bring to an end: τόν, Acts 20:24; τό ἔργον, John 4:34; John 5:36; John 17:4,(Nehemiah 6:16; τόν οἶκον, 2 Chronicles 8:16); τάς ἡμέρας, Luke 2:43; middle (present cf. Buttmann, 38 (33)) τελειοῦμαι, I finish complete, what was given me to do, Luke 13:32 (some (so A. V.) take it here as passive, I am perfected (understanding it of his death; cf. Ellicott, Life of our Lord, Lect. vi., p. 242 n{1}; Keim, ii., 615 n^1)).

2. to complete (perfect), i. e. add what is yet lacking in order to render a thing full: τήν ἀγάπην, passive, 1 John 2:5; 1 John 4:12, 17; ἡ δύναμις μου ἐν ἀσθένεια τελειοῦται, my power shows itself most efficacious in them that are weak, 2 Corinthians 12:9 R G; ἐκ τῶν ἔργων ἡ πίστις ἐτελειώθη, by works faith was perfected, made such as it ought to be, James 2:22; τετελείωται τίς ἐν τῇ ἀγάπη, one has been made perfect in love, his love lacks nothing, 1 John 4:18 (οἱ τελειωθεντες ἐν ἀγάπη, Clement of Rome, 1 Cor. 50, 3 [ET]; (τελειῶσαι τήν ἐκκλησίαν σου ἐν τῇ ἀγάπη σου, 'Teaching' etc. 10, 5 [ET])); ἵνα ὠσί τετελειωμένοι εἰς ἕν, that they may be perfected into one, i. e. perfectly united, John 17:23. τινα, to bring one's character to perfection: ἤδη τετελείωμαι, I am already made perfect, Philippians 3:12 (Wis. 4:13; ὦ ψυχή ... ὅταν τελειωθης καί βραβειων καί στεφάνων ἀξιωθης, Philo de legg. alleg. 3, 23; ψυχή ... τελειωθεισα ἐν ἀρετῶν ἀθλοις καί ἐπί τόν ὅρον ἐφικομενη τοῦ καλοῦ, id. de somn. 1, 21; equivalent to to be footpad perfect, Sir. 34:10 (Sir. 31:10).

3. to bring to the end (goal) proposed: οὐδέν, Hebrews 7:19; τινα, (to perfect or consummate) i. e. to raise to the state befitting him: so of God exalting Jesus to the state of heavenly majesty, Hebrews 2:10; in the passive, Hebrews 5:9; Hebrews 7:28; to raise to the state of heavenly blessedness those who put their faith in the expiatory death of Christ, passive, Hebrews 11:40; Hebrews 12:23 ((Act. Petr. et Paul. § 88, Tdf. edition, p. 39; Act. Barnab. § 9, id., p. 68; cf. 'Teaching' etc. 16, 2 [ET]); with μαρτυρίῳ added, of the death of the apost. Paul, Eusebius, h. e. 2, 22, 2 (cf. Heinichen's note on 7, 15, 5)); to make one, meet for future entrance on this state and give him a sure hope of it even here on earth, Hebrews 10:1, 14; τινα κατά συνείδησιν, Hebrews 9:9; cf. Bleek, Brief an d. Hebrews 2:1, p. 297ff; C. R. Köstlin, Lehrbegriff des Evang. u. der Briefe Johannis (Berl. 1843), p. 421ff; Riehm, Lehrbegriff des Hebrew-Br., § 42, p. 340ff; Pfleiderer, Paulinismus, p. 344f. (English translation, ii, p. 72ff).

4. to accomplish, i. e. bring to a close or fulfilment by event: τήν γραφήν, the prophecies of Scripture, passive, John 19:28 (cf. Winers Grammar, 459 (428); Buttmann, § 151, 20).