tidal wave

Noun

• a wave resulting from the periodic flow of the tides that is caused by the gravitational attraction of the moon and sun

• an unusual (and often destructive) rise of water along the seashore caused by a storm or a combination of wind and high tide

• an overwhelming manifestation of some emotion or phenomenon
  • a tidal wave of nausea
    
  • the flood of letters hit him with the force of a tidal wave
    
  • a tidal wave of crime