baptizeEnglishOxford American Thesaurusbaptize verb 1 he was baptized at the parish church: christen, immerse, sprinkle; rare lustrate. 2 he had been baptized into the Roman Catholic Church: admit, introduce, initiate, enroll, recruit, convert. 3 he was baptized with the names John Cyril: name, give a name to, call, dub, nickname; label, style, term, describe as, title, entitle, designate; rare clepe, denominate.