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.10.41Phil.4.81Pet.5.12
truth John.19.35
ἀληθὴσ true Matt.22.16Mark.12.14John.21.24
ἀληθὲσ true 1John.2.8
truly John.4.18
ἀληθοῦσ true 2Pet.2.22
ἀληθεῖσ true 2Cor.6.8
ἀληθήσ true John.3.33John.5.31John.5.32John.6.55John.6.55John.7.18John.8.13John.8.14John.8.17John.8.26Rom.3.4Titus.1.133John.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.31.20LXX.Job.5.12LXX.Job.42.7LXX.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 [],

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+]; ἀληθήςϊ 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 . `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, . 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 .[Refs 5th c.BC+]; τὴν . μουσικήν (i.e. οὖσαν) [Refs 4th c.BC+] —ὡς . 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 .[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+]