upswell

/ʌpˈswɛl/
verb
  1. To increase in size, volume, or intensity; to swell upward or outward.
    • Emotions began to upswell in the crowd as the speaker finished.
    • The river began to upswell after days of heavy rain.
    • The music seemed to upswell from the orchestra, filling the hall with sound.
Antonyms
noun
  1. A sudden increase or rise, especially in emotion, sound, or water level.
    • A great upswell of applause followed the performance.
    • The upswell of the tide caught the swimmers by surprise.
    • There was an upswell of support for the new community center.
What does "upswell" mean? | whatsthatwordmean | whatsthatwordmean