tidal wave

noun

1. 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”

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

3. A wave resulting from the periodic flow of the tides that is caused by the gravitational attraction of the moon and sun