Strong's Greek #227
ἀληθοῦς

Englishman's Concordance (References)

ἀληθοῦς alēthous — 1 Occurrence

2 Peter 2:22 - Adj-GFS
GRK:τὸ τῆς ἀληθοῦς παροιμίας Κύων
NAS: It has happened to them according to the true proverb,
KJV: according to the true proverb,
INT: the [word] of the true proverb [The] dog