Quick Definition
καίπερ Cj. although
Strong's Definition
from 2532 and 4007; and indeed, i.e. nevertheless or notwithstanding
KJV Usage: and yet, although
UBS Dictionary of the Greek New Testament
conj.
89.71 · Relations · Concession
although, though, even though a marker of concession In some languages concession is marked not by a particle attached to the so-called concessive clause, but by marking an unexpected contrast in the related clause. For example, the expression in HEB 5:8 may be rendered in some languages as ‘he was God’s Son, but nevertheless he learned to be obedient,’ and the expression in 2PE 1:12 may be rendered as ‘you already know these matters, but nevertheless I will always remind you of them.’
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
καίπερ [Treg. καί περ in Heb.; fr. Hom. Od. 7, 224 down |, conjunc., [originally even very much, οἵ. Donaldson ὃ 621; Biumlein p. 200 sq.; Kriiger 8 ὅθ, 13, 2; B. § 144, 23; W. § 45, 2 fin.], although; it is joined to a ptep. (in Grk. writ. sometimes also to an adj., so that ὧν must be supplied) : Phil. iii. 4; Heb. v. 8; vii. 5; xii. 17; 2 Pet. i. 12; contrary to ordinary usage [yet so occasionally in Grk. writ.] with a finite verb, καίπερ ἐστίν, Rev. xvii. 8 Ree. ; but since Grsb. καὶ wapeora [correctly παρέσται (see in πάρειμι)] has been restored after the best codd.
Mounce Concise Greek Dictionary
καίπερ kaiper 5x
though, although; Phil. 3:4; Heb. 5:8; 7:5; 12:17; 2 Pet. 1:12*
Abbott-Smith Greek Lexicon
καίπερ, concessive particle,
[in LXX: Pr 6:8, Wi 11:9, Jh 1:13, II-IV Mac11*;]
although: c. ptcp., Phl 3:4, He 5:8 7:5 12:17, II Pe 1:12.†
Moulton & Milligan — Vocabulary of the Greek NT
καίπερ CPHerm I. 8619 καινοῦ νομίσματοϊς : οἴ. 18, In P Heid 61 (iv/A.D.) (= Selections, p. 126) the writer addresses a Christian “brother” as δεσπότην kal κενὸν (1. καινὸν) (π)ά[τ]ρωῖνα. Τὰ καινότερον (like τὰ πάλαι, etc.), unless it is a mere mistake for τι, is the phrase for ‘‘news” in BGU III. 8215 (ii/a.p.) ἀνέβη εἰ[ς τ]ὴν πόλιν, ἵνα εἰδ[ῶ] τὰ καινότερον, followed by ὃ ὅταν ἣν (= 7, as often) τι καινότερον, εὐθέως σοι δηλζώ]σω : cf. ἃς 175. For the subst. καινισμός see P Lond 3545 (c. B.c. 10) (ΞΞ 11. p. 165) ἀποστάσεως καινισμὸν παραλογιεῖσθαι, and for the verb καινίζω see P Tor II. 71% μὴ προσέχειν τοῖς ἐπὶ χρειῶν τεταγμένοις και(νῶζειν τι, and Wiinsch 4/ 5%? (iii/A.p.) ὁρκίζω oe. . τὸν ποιοῦντα ἔκτρομον τὴν [γ]ῆν ἅπασί(αν καὶ) καινίζοντα πάντας τοὺς κατοικοῦντας (cf. Wisd 727). In MGr καινός is ‘‘literary’’: the New Testament in Pallis’ edition is ἡ νέα διαθήκη, which shows how νέος has | gained ground at the expense of its rival.
Liddell-Scott-Jones — Greek-English Lexicon
καίπερ (kaiper) — although. καίπερ, in [Refs 8th c.BC+] always with a word between (except καί περ πολλὰ παθόντα [Refs 8th c.BC+]; but one word in [Refs 5th c.BC+]
I. even, καὶ αὐτοί περ πονεώμεθα [Refs 8th c.BC+]
II. although, albeit, usually with participle, καὶ αὐτῇ περ νοεούσῃ [Refs 8th c.BC+]: so in later Poets, κ. ἀχνύμενος [Refs 5th c.BC+]participle must frequently be supplied, καὶ θεός περ [ὤν] [Refs 4th c.BC+]; γιγνώσκω σαφῶς, κ. σκοτεινὸς [ὤν], τήν γε σὴν αὐδὴν ὅμως [Refs 5th c.BC+]; also εἰ μέμονάς γε, καὶ ὀψέ περ [ἐρυόμενος],.. ἐρύεσθαι [Refs 8th c.BC+]; λέγεις ἀληθῆ, κ. ἐκ μακροῦ Χρόνου [λέγων] [Refs 5th c.BC+]; ἀλλ᾽ ἔστιν ὧν δεῖ, κ. οὐ πολλῶν ἄπο, ={καίπερ οὐ πολλῶν ὄντων}, [Refs 5th c.BC+]; κ. (to be read καίτοι) ἐκεῖνό γε ᾤμην τι εἶναι [Refs 5th c.BC+]