FROM STRONG’S GREEK DICTIONARY (1890)

Strong’s Greek Dictionary (1890) — public domain, printed whole.

martureo μαρτυρέω — mar-too-reh'-o — from 3144; to be a witness, i.e. testify (literally or figuratively):--charge, give (evidence), bear record, have (obtain, of) good (honest) report, be well reported of, testify, give (have) testimony, (be, bear, give, obtain) witness.

see GREEK for 3144