submerse (v.)youdaoicibaDictYouDict[submerse 词源字典]
early 15c., "to submerge, plunge" (transitive), from Latin submersus, past participle of submergere (see submerge). Modern use (18c.) might be a back-formation from submersion. Related: Submersed; submersing.[submerse etymology, submerse origin, 英语词源]