verb (v)

• sink below the surface; go under or as if under water(verb.motion)

  Synonym:
  submerse
  

  source: wordnet30
• cover completely or make imperceptible(verb.contact)

  Synonym:
  drown, overwhelm
  

  source: wordnet30
• put under water(verb.contact)

  Example:
  Submerge your head completely.
  

  source: wordnet30
• fill or cover completely, usually with water(verb.change)

  Synonym:
  deluge, inundate
  

  source: wordnet30
• To put under water; to plunge.(verb)

  source: webster1913
• To plunge into water or other fluid; to be buried or covered, as by a fluid; to be merged; hence, to be completely included.(verb)

  source: webster1913