Strong's Greek #50
ἀγνοούμενοι

Englishman's Concordance (References)

ἀγνοούμενοι agnooumenoi — 1 Occurrence

2 Corinthians 6:9 - V-PPM/P-NMP
GRK:ὡς ἀγνοούμενοι καὶ ἐπιγινωσκόμενοι
NAS:as unknown yet well-known,
KJV: As unknown, and [yet] well known;
INT: as being unknown and well-known