Lexical Definition

‎ἀσθενέω‎ asthenéō (as-then-eh'-o) be weak: weak ^G:V
from ‎ἀσθενής‎

be diseased, impotent folk (man), (be) sick, (be, be made) weak.

• to be feeble (in any sense)

Abbott-Smith

ἀσθενέω, -ῶ (< ἀσθενής), [in LXX chiefly for כּשׁל;]
to be weak, feeble: Ac 20:35, Ro 8:3, II Co 11:21 12:10 13:4, 9; c. dat., πίστει (Cremer, 527), Ro 4:19 14:1; same implied, Ro 14:2, 21, I Co 8:11, 12, II Co 11:29; εἰς, II Co 13:3. Specif., of bodily debility, to be sick: Mt 25:36, 39, Lk 4:40, Jo 4:46 5:3, 7, 13 11:1-3, 6, Ac 9:37, Phl 2:26, 27, II Ti 4:20, Ja 5:14; οἱ ἀσθενοῦντες, the sick: Mt 10:8 (MM, s.v.), Mk 6:56, Lk 9:2, Ac 19:12.†

Abbott-Smith References

Liddell-Scott-Jones

Included with: ἀσθενέω-εια, ἡ,

want of strength, weakness, [Refs 5th c.BC+]; especially feebleness, sickliness, [Refs 5th c.BC+]

__2 disease, sickness, [Refs 2nd c.BC+]; δι᾽ ἀσθενέωειαν[NT]
__3 ἀ. βίου poverty, [Refs 5th c.BC+]
__4 in moral sense, feebleness, weakness, τῆς ἀνθρωπίνης φύσεως[Refs 5th c.BC+] to be weak, feeble, sickly, ἀ. μέλη to be weak in limb, [Refs 5th c.BC+]; ἀ. ἀσθενέωειαν [NT+5th c.BC+]; ἠσθένησε he fell sick, [Refs 4th c.BC+]sick man, [Refs 5th c.BC+]; ἠσθενηκότα[Refs 2nd c.BC+]
__2 to be needy, [Refs 5th c.BC+]; ἠσθενηκότες, of those unable to pay taxes, [Refs 1st c.BC+]
__3 with infinitive, to be too weak to do a thing, not to be able.., [Refs 1st c.AD+]
__4 decline, ἠσθένησεν ἡ ἡμέρα εἰς τὴν ἑσπέραν[LXX]

_{LSJ Scripture Refs: Gal.4.13 ☩ Matt.10.8 ☩ LXX.Judg.19.9}