Θαδδαῖος Save Could not find Θαδύτιος in Logeion dictionaries. Θαδύτιος Proper-name noun: masculine nominative singular of Θαδύτιος See Θαδύτιος in Morpho Abbott-Smith NT Number of occurrences in NT: 2Strong 2280 Θαδδαῖος, -ου, ὁ (Aram. תַּדִאַי, תַּדַּי), Thaddæus: Mt 10:3, Mk 3:18 (WH, mg., Λεββαῖος, q.v.).†