Verbs

(v)submerge, submersesink below the surface; go under or as if under water
(v)submerge, drown, overwhelmcover completely or make imperceptible“I was drowned in work”, “The noise drowned out her speech”
(v)submerge, submerseput under water“submerge your head completely”
(v)inundate, deluge, submergefill or cover completely, usually with water