Lexical Definition

‎ἄκαρπος‎ ákarpos (ak'-ar-pos) unfruitful G:A
from ‎Α‎ (as a negative particle) and ‎καρπός‎

without fruit, unfruitful.

Usage: 7 forms in 8 verses
Form Translated As     In Verse(s)
ἄκαρπόσ unfruitful 1Cor.14.14
ἄκαρποσ unfruitful Matt.13.22Mark.4.19
ἄκαρποι unfruitful Titus.3.14
ἄκαρπα without fruit Jude.1.12
ἀκάρπουσ unfruitful 2Pet.1.8
ἀκάρποισ unfruitful Eph.5.11
ακάρπω unfruitful LXX.Jer.2.6

Abbott-Smith

ἄ-καρπος, -ον, [in LXX: Je 2:6 (צַלְמָוֶת), Wi 15:4, IV Mac 16:7;]
unfruitful, barren: fig., Mt 13:22, Mk 4:19, I Co 14:14, Eph 5:11, Tit 3:14, II Pe 1:8, Ju 12.†

Abbott-Smith References

Book Refs
Jeremiah 2:6
Matthew 13:22
Mark 4:19
1 Corinthians 14:14
Ephesians 5:11
Titus 3:14
2 Peter 1:8
Jude 1:12

Liddell-Scott-Jones

ἄκαρπος-ος, ον,

without fruit, barren, [Refs 5th c.BC+]; . ξύλον, ={ἀκακία}, [LXX+2nd c.AD+]

__2 metaphorically, fruitless, unprofitable, πόνος[Refs 5th c.BC+]. adverb -πως[Refs 5th c.BC+]
__II active, making barren, [Refs 4th c.BC+]

LSJ Scripture Refs: LXX.Isa.41.19