Lexical Definition

‎ἀδύνατος‎ adýnatos (ad-oo'-nat-os) unable G:A
from ‎Α‎ (as a negative particle) and ‎δυνατός‎

could not do, impossible, impotent, not possible, weak.

Usage: 12 forms in 25 verses
Form Translated As     In Verse(s)
ἀδύνατόν impossible Matt.19.26
ἀδύνατοσ crippled Acts.14.8
ἀδύνατον impossible Mark.10.27 • Heb.6.4 • Heb.6.18 • Heb.10.4 • Heb.11.6
powerless Rom.8.3
ἀδύνατα impossible Luke.18.27
ἀδυνάτων weak Rom.15.1
αδύνατοσ and may powerless LXX.Job.5.15
powerless LXX.Joel.3.10
αδύνατον a disabled LXX.Job.31.34
disabled LXX.Job.36.15
αδύνατοι But disabled LXX.Job.31.16
and disabled LXX.Job.24.6
and the disabled LXX.Job.31.20
αδύνατά impossible LXX.Prov.30.18
αδυνάτων disabled LXX.Job.34.20 • LXX.Job.36.19
of disabled LXX.Job.20.19
of the disabled LXX.Job.29.16
αδυνάτω disabled LXX.Job.30.25
αδυνάτουσ disabled LXX.Job.24.4 • LXX.Job.24.22

Abbott-Smith

ἀ-δύνατος, -ον, [in LXX for אֶבְיוֹן, דַּל, etc.;]

1. of persons, unable, powerless: Ac 14:8; fig. Ro 15:1 (MM, VGT, s.v.).
2. Of things, impossible: Mt 19:26, Mk 10:27, Lk 18:27, Ro 8:3, He 6:4, 18 10:4 11:6.†

Abbott-Smith References

Book Refs
Matthew 19:26
Mark 10:27
Luke 18:27
Acts 14:8
Romans 8:3 · 15:1
Hebrews 6:4 · 6:18 · 10:4 · 11:6

Liddell-Scott-Jones

ἀδύνατος-ος, ον,

__I of persons, unable to do a thing, with infinitive, [Refs 5th c.BC+]; ἀ. ὥστε.. [Refs 5th c.BC+]: superlative -ώτατος, λέγειν[Refs 5th c.BC+]
__I.2 absolutely, without strength, powerless, weakly, [Refs 5th c.BC+]; οἱ ἀ. men disabled for service, whether as invalids or paupers, [Refs 5th c.BC+]; ἀ. χρήμασι poor, [Refs 5th c.BC+]; εἴς τι [Refs 5th c.BC+]; οἱ -ώτατοι persons of no importance, [Refs 1st c.BC+]; of ships, disabled, [Refs 5th c.BC+]; τὸ ἀ. want of strength, [Refs 5th c.BC+]; τὰ ἀ. disabilities, [Refs 4th c.BC+]
__II of things, impossible, [Refs 5th c.BC+]; ἐλπίδες unrealizable, [Refs 4th c.BC+]reductio ad impossibile, APr. [Refs] —ἀδύνατόν [ἐστι] with infinitive, [Refs 5th c.BC+]; ἀδύνατά [ἐστι] [Refs 5th c.BC+]; ἀ. ὑμῖν ὥστε.. [Refs 5th c.BC+]: superlative, ὃ δὴ πάντων -ώτατον[Refs]
__III adverb -τως without power or skill, feebly, ἀμύνεσθαι[Refs 5th c.BC+] —ἀ. ἔχειν to be unwell, [Refs 5th c.BC+]; to be unable, with infinitive, [Refs 4th c.BC+]; ἀ. ἔχει it is impossible, [Refs 4th c.BC+]; ἀ. λέγεται it is an impossible story, [Refs 5th c.BC+]