Lexical Definition

‎ἀληθής‎ alēthḗs (al-ay-thace') true G:A
from ‎Α‎ (as a negative particle) and ‎λανθάνω‎

true, truly, truth.

Usage: 10 forms in 40 verses
Form Translated As     In Verse(s)
ἀληθῆ true John.10.41 • Phil.4.8 • 1Pet.5.12
truth John.19.35
ἀληθὴσ true Matt.22.16 • Mark.12.14 • John.21.24
ἀληθὲσ true 1John.2.8
truly John.4.18
ἀληθοῦσ true 2Pet.2.22
ἀληθεῖσ true 2Cor.6.8
ἀληθήσ true John.3.33 • John.5.31 • John.5.32 • John.6.55 • John.6.55 • John.7.18 • John.8.13 • John.8.14 • John.8.17 • John.8.26 • Rom.3.4 • Titus.1.13 • 3John.1.12
ἀληθέσ real Acts.12.9
true 1John.2.27
αληθήσ a true LXX.Neh.7.2
it is true LXX.Dan.8.26
true LXX.Deut.13.14
αληθή a true LXX.Prov.22.21
they are true LXX.Isa.41.26
true LXX.Prov.1.3
truth LXX.Isa.43.9
validity LXX.Isa.42.3
αληθέσ a true LXX.Job.17.10
true LXX.2Chr.31.20 • LXX.Job.5.12 • LXX.Job.42.7 • LXX.Job.42.8
will be true LXX.Gen.41.32

Abbott-Smith

ἀληθής, -ές (< λήθω = λανθάνω, hence primarily, unconcealed, manifest; hence, actual, real), [in LXX for אֶמֶת, etc.;]
(a) of things, true, conforming to reality: Jo 4:18 5:31,32 6:55 (= ἀληθινός, q.v.) Jo 8:13,14, 17 10:41 19:35 21:24, Ac 12:9, Phl 4:8, Tit 1:13, I Pe 5:12, II Pe 2:22, I Jo 2:8, III Jo 12;
(b) of persons, truthful: Mt 22:16, Mk 12:14, Jo 3:33 7:18 8:26, Ro 3:4, II Co 6:8.†
SYN.: ἀληθινός, real, genuine, ideal, as opp. to spurious or imperfect ἀληθής, true to fact, as opp. to false, lying, denotes the actuality of a thing: ἀληθινός, its relation to the corresponding conception. (Cf. Tr., Syn., § viii; Cremer, 84 f., 631 Abbott, JV, 234 f.; DB, iv, 818 f.; MM, VGT, s.vv.)

Abbott-Smith References

Book Refs
Matthew 22:16
Mark 12:14
John 3:33 · 4:18 · 5:31 · 6:55 · 7:18 · 8:13 · 8:17 · 8:26 · 10:41 · 19:35 · 21:24
Acts 12:9
Romans 3:4
2 Corinthians 6:8
Philippians 4:8
Titus 1:13
1 Peter 5:12
2 Peter 2:22
1 John 2:8
3 John 1:12

Liddell-Scott-Jones

ἀληθής-ής [ᾰ],

Doric dialect ἀλᾱθής, ές, (λήθω, ={λανθάνω}: ἀληθήςὲς τὸ μὴ λήθῃ ὑποπῖπτον[Refs]:—unconcealed, so true, real, opposed to false, apparent:

__I [ἀληθήςέα μυθήσασθαι, εἰπεῖν, ἀγορεύειν, ἀληθήςὲς ἐνισπεῖν, 8th c.BC: Ilias Homerus Epicus “Illiad” 6.382, 8th c.BC: Odyssea Homerus Epicus “Odyssey” 13.254, 3.254, 247, +others; in 5th c.BC: Herodotus Historicus and \_Attic dialect\_ τὸ ἀληθήςές, by Trag. crasis τἀληθήςές, \_Ionic dialect\_ τὠληθές (5th c.BC: Herodotus Historicus 6.68, 69), or τὰ ἀληθήςῆ, by crasis τἀληθήςῆ, etc.">Refs 8th c.BC+]; ἀληθήςέϊ λόγῳ χρᾶσθαι[ἀληθήςέϊ λόγῳ βασιλέες 1.120; ἀληθήςεστάτη πρόφασις 5th c.BC: Thucydides Historicus 1.23. ">Refs 5th c.BC+]
__I.2 of persons, etc., truthful, honest (not in [Refs 8th c.BC+]; οἶνος ἀ. `in vino veritas', [Refs 5th c.BC+]
__I.3 of oracles, true, unerring, ἀλαθέα μαντίων θῶκον[Refs 5th c.BC+]; of dreams, [Refs 4th c.BC+]
__II of qualities or events, true, real, φίλος[Refs 5th c.BC+]; genuine, ἀ. εἶναι δεῖ τὸ σεμνόν, οὐ κενόν[Refs 4th c.BC+]
__II.2 realizing itself, coming to fulfilment, ἀρά[Refs 4th c.BC+]
__III adverb ἀληθήςῶς, Ionic dialect -θέως, truly, [Refs 5th c.BC+]
__III.b actually, in reality, γένος τόδε Ζηνός ἐστιν ἀ.[Refs 5th c.BC+]; τὴν ἀ. μουσικήν (i.e. οὖσαν) [Refs 4th c.BC+] —ὡς ἀ. in the true way, really, [Refs 5th c.BC+]: comparative -εστέρως[Refs 5th c.BC+] -έστερον [Refs 5th c.BC+]: superlative -έστατα[Refs 5th c.BC+]
__III.2 neuter as adverb, proparoxytone ἄληθε; indeed? really? ironically, [Refs 5th c.BC+]
__III.3 τὸ ἀληθήςές truly, Ionic dialect τὠληθές[Refs 3rd c.BC+]
__B not forgetting, careful, γυνὴ χερνῆτις ἀ.[Refs 8th c.BC+]:—the sense honest is post- [Refs 8th c.BC+] ἀληθής-ίζω, dye with genuine purple, [Refs]
__B.II middle -ίζομαι, ={ἀληθήςεύω}, [Refs 5th c.BC+]