G1246
διακατελέγχομαι
to refute
δια-κατ-ελέγχομαι to confute completely: Act.18:28.† (AS)
The KJV translates G1246 in the following manner:
convinced (2x)
Full Thayer's lexicon entry
διακατελέγχομαι — diakatelénchomai
διακατελέγχομαι: imperfect διακατηλεγχομην; to confute with rivalry and effort or in a contest (on this use of the preposition διά in compos. cf. Herm. ad Vig., p. 854; (others give it here the sense of completeness; see διά, C. 2)): with the dative of person (Winers Grammar, § 31, 1 f.; Buttmann, 177 (154)); not found except in Act 18:28 (R. V. powerfully confuted).
1 occurrence