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1. Become filled with uncontrollable emotion or too much sensory input
   - overpower, sweep over, overcome, overtake
    
2. Charge someone with too many tasks
   - deluge, flood out
    
3. Cover completely or make imperceptible
   - submerge, drown
    
4. Overcome by superior force
   - overpower, overmaster

Derived forms: overwhelmed, overwhelming, overwhelms

See also: drown out

Type of: arouse, beat, beat out, burden, charge, cover, crush, elicit, enkindle [literary], evoke, fire, kindle, lumber [Brit, informal], provoke, raise, saddle, shell, spread over, trounce, vanquish