Lexical Definition

‎ἀσθένεια‎ asthéneia (as-then'-i-ah) weakness: weak ^G:N-F
from ‎ἀσθενής‎

disease, infirmity, sickness, weakness.

• feebleness (of mind or body)
• by implication, malady
• morally, frailty

Abbott-Smith

ἀσθένεια, -ας, ἡ (< ἀσθενής), [in LXX for כּשׁל, etc.;]
weakness, frailty, sickness: Lk 13:11, 12, Jo 11:4, Ac 28:9, Ro 6:19 8:26, II Co 11:30 13:4, Ga 4:13 (MM, s.v.), He 5:2 7:28 11:34; ἐν ἀ., Jo 5:5, I Co 2:3 15:43, II Co 12:9; pl., Mt 8:17, Lk 5:15 8:2, II Co 12:5 12:9, 10, I Ti 5:23, He 4:15.†
SYN.: μαλακία, νόσος (v. DB, iii, 323a).

Abbott-Smith References

Liddell-Scott-Jones

ἀσθένεια-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᾽ ἀσθένειαειαν[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. ἀσθένειαειαν [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}