Strong's Greek #175
ἀκάρπους

Englishman's Concordance (References)

ἀκάρπους akarpous — 1 Occurrence

2 Peter 1:8 - Adj-AMP
GRK:ἀργοὺς οὐδὲ ἀκάρπους καθίστησιν εἰς
NAS: nor unfruitful in the true knowledge
KJV: nor unfruitful in
INT: idle nor unfruitful make [you] as to