Quick Definition
and yet, although
Strong's Definition
and yet, i.e. nevertheless
Derivation: from G2532 (καί) and G5104 (τοί);
KJV Usage: although
Thayer's Greek Lexicon
καίτοι (from καί and τοι), conjunction, with a participle (but in classical Greek with a finite verb also (as in Acts below); Krüger, § 56, 13, 2; cf. references under the word καίπερ), and yet, although: Heb_4:3 (although the work of creation had been finished long ago, so that the rest spoken of cannot be understood to be that of God himself resting from that work (cf. Kurtz, in the place cited)); (Act_14:17 L T Tr Wit (but Tr καί τοι)).
Mounce Concise Greek Dictionary
καίτοι kaitoi 2x
and yet, though, although, Act_14:17 ; Heb_4:3
Abbott-Smith Greek Lexicon
** καίτοι
( = καί τοι , and so also written in cl .),
concessive particle, [in LXX : 4Ma_2:6 * ;]
and yet, although: Act_14:17 ; c . ptcp ., Heb_4:3 .†
Moulton & Milligan — Vocabulary of the Greek NT
καίτοι [page 315]
P Petr II. 3( b ) .2 (iii/B.C.) παρὰ δύναμιν δὲ καίτοι πάλαι ἐκ [ . . . . . ] ἀντέχομαι , BGU III. 850 .4 (A.D. 76) θαυμάζω (ι ) ἐπὶ τῆι [ . . . ]ντ̣α̣ξίᾳ σου , καίτοι ἐμοῦ σ̣ε̣ πολλὰ ἐρωτήσαντος , P Giss I. 84 ii. 10 (beg. ii/A.D.) μέχρι τούτ [ο ]υ σοι οὐ πα [ρ ]ε̣στάθη και̣τοι πρόγραμμά σου π̣[ροετέθη κελεῦον κτλ ., PSI IV. 298 .12 (iv/A.D.) τοὺς τοῦ μηνὸς [μισθοὺς οὐ παρ ]έσχεν μοι καίτοι αὐτο̣, ς ἐκδεξάμενος κτλ .
Liddell-Scott — Intermediate Greek Lexicon
καίτοι καί τοι , "and indeed, and further", Hom. , Eur. "and yet", to mark an objection, καίτοι τί φημι; Aesch. ; καίτοι τί φωνῶ; Soph. :—also, strengthd. καίτοι γε Ar.
STEPBible — Tyndale Abridged Greek Lexicon
καίτοι
(= καί τοι, and so also written in cl.)
concessive particle, [in LXX: 4Ma.2:6 * ;]
and yet, although: Act.14:17; with ptcp., Heb.4:3.†
(AS)