Lexical Definition

‎ἀγνοέω‎ agnoéō (ag-no-eh'-o) be ignorant G:V
from ‎Α‎ (as a negative particle) and ‎νοιέω‎

(be) ignorant(-ly), not know, not understand, unknown.

Usage: 20 forms in 30 verses
Form Translated As     In Verse(s)
ἠγνόουν they were not understanding Mark.9.32Luke.9.45
ἀγνοῶν being ignorant 1Tim.1.13
not knowing Rom.2.4
ἀγνοοῦσιν being ignorant Heb.5.2
they are ignorant of 2Pet.2.12
ἀγνοοῦντεσ Being ignorant of Rom.10.3
not knowing Acts.17.23
ἀγνοοῦμεν we are ignorant 2Cor.2.11
ἀγνοούμενοσ unknown Gal.1.22
ἀγνοούμενοι being unknown 2Cor.6.9
ἀγνοεῖτε are you ignorant Rom.7.1
are you unaware Rom.6.3
ἀγνοεῖται him is ignored 1Cor.14.38
ἀγνοεῖν to be ignorant Rom.1.13Rom.11.251Cor.10.11Cor.12.12Cor.1.81Thess.4.13
ἀγνοεῖ is ignorant 1Cor.14.38
ἀγνοήσαντεσ not having known Acts.13.27
ηγνόησεν knew not LXX.1Sam.14.24
ηγνόησε he was ignorant of LXX.Lev.5.18
ηγνόηκασ You have known LXX.2Chr.16.9
ηγνόηκα I am ignorant LXX.1Sam.26.21
ηγνοήσαμεν we knew not LXX.Num.12.11
αγνόει be not ignorant LXX.Hos.4.15
αγνοούν ignorant LXX.Gen.20.4
αγνοήση should not know LXX.Lev.4.13

Abbott-Smith

ἀγνοέω, -ῶ (> ἁγνίζω), [in LXX for שׁגה, שׁגג, אשׁם, etc.;]

1. to be ignorant, not to know: absol., I Ti 1:13, He 5:2; c. acc., Ac 13:27 17:23, Ro 10:3, II Co 2:11; ἐν οἷς, II Pe 2:12; seq. ὅτι, Ro 2:4 6:3 7:1, I Co 14:38; οὐ θέλω ὑμᾶς ἀγνοεῖν, a Pauline phrase: c. acc., Ro 11:25; seq. ὑπέρ, II Co 1:8; περί, I Co 12:1, I Th 4:13. ὅτι, Ro 1:13, I Co 10:1 (for similar usage in π., V. MM, VGT, s.v.). Pass.: I Co 14:38, II Co 6:9, Ga 1:22.
2. not to understand: c. acc., Mk 9:32, Lk 9:45.†

Abbott-Smith References

Book Refs
Mark 9:32
Luke 9:45
Acts 13:27 · 17:23
Romans 1:13 · 2:4 · 6:3 · 7:1 · 10:3 · 11:25
1 Corinthians 10:1 · 12:1 · 14:38
2 Corinthians 1:8 · 2:11 · 6:9
Galatians 1:22
1 Thessalonians 4:13
1 Timothy 1:13
Hebrews 5:2
2 Peter 2:12

Liddell-Scott-Jones

ἀγνοέω-έω,

Epic dialect ἀγνοέωι-, 3rd.pers.singular subjunctive ἀγνοέωιῇσι[Refs 8th c.BC+]: imperfect ἠγνόουν[Refs 5th c.BC+]: future ἀγνοέωήσω[Refs 5th c.BC+]: aorist ἠγνόησα[Refs 5th c.BC+]; Epic dialect ἠγνοίησα[Refs 8th c.BC+], Epic dialect contraction 3rd.pers.singular ἀγνώσασκε[Refs 8th c.BC+]: perfect ἠγνόηκα[Refs 5th c.BC+] —passive, future (of middle form) ἀγνοέωήσομαι[Refs 4th c.BC+]; ἀγνοέωηθήσομαι variant in [Refs 2nd c.AD+]aorist ἠγνοήθην, see below: perfect ἠγνόημαι[Refs 5th c.BC+]:—not to perceive or recognize; [Refs 8th c.BC+] ost always in aorist, ἄνδρ᾽ ἀγνοέωιήσασ᾽ ὑλάει[Refs 8th c.BC+]; mostly with negative, οὐκ ἠγνοίησεν he perceived or knew well, [Refs 8th c.BC+]—Mostly with accusative, to be ignorant of, [Refs 5th c.BC+]; ἑαυτοὺς . forget their former selves, [Refs 4th c.BC+]; τὴν πόλιν . not to discern the temper of the city, [Refs 2nd c.AD+]; fail to understand, τὸ ῥῆμα[ἀγνοέωοῦντες ἀλλήλων ὅ τι λέγομεν [prev. author] “Grg.” 517c">NT+5th c.BC+]: dependent clauses in participle, τίς.. . τὸν ἐκεῖθεν πόλεμον δεῦρο ἥξοντ;[ἀγνοέωῶν εἰ.. 5th-6th c.BC: Xenophon Historicus “Anabasis” 6.5.12">Refs 5th c.BC+]:—passive, not to be known, recognized, [ἀγνοέωούμενα ὅπῃ.. ἀγαθά ἐστι [prev. author] “R.” 506a">Refs 5th c.BC+]; ἠγνοῆσθαι ξύμπασιν ὅτι.. [ἀγνοέωήσεσθαι 4th c.BC: Demosthenes Orator 18.249">Refs 4th c.BC+]; καιρὸν οὐ παρεθέντα οὐδ᾽ ἀγνοέωηθέντα [Refs 5th c.BC+]; τὰ ἠγνοημένα unknown parts, [Refs 2nd c.AD+]

__II absolutely, go wrong, make a false step, first in [Refs 5th c.BC+]; participle ἀγνοέωῶν ignorantly, by mistake, [ἀγνοέωήσαντες 5th-6th c.BC: Andocides Orator 4.5">Refs 5th c.BC+]: in moral sense, to be ignorant of what is right, act amiss, [NT+2nd c.BC+]:—middle, fail to recognize, [Refs 2nd c.AD+]

LSJ Scripture Refs: Mark.9.32