Lexical Definition

‎ἀληθῶς‎ alēthōs (al-ay-thoce') truly G:ADV
adverb from ‎ἀληθής‎

indeed, surely, of a surety, truly, of a (in) truth, verily, very.

Usage: 2 forms in 35 verses
Form Translated As     In Verse(s)
ἀληθῶσ Of a truth Luke.12.44
Surely Matt.26.73
Truly Matt.14.33Matt.27.54Mark.14.70Mark.15.39Luke.21.3John.1.47John.4.42John.6.14John.7.26John.7.26John.7.40John.8.31John.17.8Acts.12.111Thess.2.131John.2.5
truthfully Luke.9.27
αληθώσ truly LXX.Gen.18.13LXX.Gen.20.12LXX.Exod.33.16LXX.Deut.17.4LXX.Josh.7.20LXX.Ruth.3.12LXX.1Sam.22.7LXX.1Kgs.8.27LXX.1Kgs.18.39LXX.2Chr.6.18LXX.Ps.58.1LXX.Isa.40.7LXX.Jer.28.6LXX.Jer.51.13LXX.Dan.3.14LXX.Dan.3.24

Abbott-Smith

ἀληθῶς adv. (< ἀληθής), [in LXX (Je 28:6*, Ps 58:1*, al.) chiefly for אָמֵן and cogn. forms;]
truly, surely: Mt 14:33 26:73 Mk 14:70 15:39, Lk 9:27 12:44 21:3, Jo 1:48 4:42 6:14 7:26, 40 8:31 17:8 Ac 12:11, I Th 2:13, I Jo 2:5.†

Abbott-Smith References

Book Refs
Psalms 58:1*
Jeremiah 28:6*
Matthew 14:33 · 26:73
Mark 14:70 · 15:39
Luke 9:27 · 12:44 · 21:3
John 1:48 · 4:42 · 6:14 · 7:26 · 7:40 · 8:31 · 17:8
Acts 12:11
1 Thessalonians 2:13
1 John 2:5

Liddell-Scott-Jones

Included with: ἀληθῶς-ής [],

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

__I [ἀληθῶςέα μυθήσασθαι, εἰπεῖν, ἀγορεύειν, ἀληθῶςὲς 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 ἀληθῶςές, by Trag. crasis τἀληθῶςές, \_Ionic dialect\_ τὠληθές (5th c.BC: Herodotus Historicus 6.68, 69), or τὰ ἀληθῶςῆ, by crasis τἀληθῶςῆ, etc.">Refs 8th c.BC+]; ἀληθῶςϊ λόγῳ χρᾶσθαι[ἀληθῶςέϊ λόγῳ βασιλέες 1.120; ἀληθῶςεστάτη 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 ἀληθῶςῶς, 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 ἀληθῶςές 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+] ἀληθῶς-ίζω, dye with genuine purple, [Refs]
__B.II middle -ίζομαι, ={ἀληθῶςεύω}, [Refs 5th c.BC+]