floodtide

/F L AH1 D T AY0 D/
noun
  1. 1

    The period between low tide and the next high tide in which the sea is rising.

  2. 2

    (by extension) The highest point of something; a climax.

Antonyms

Source: https://en.wiktionary.org/wiki/flood%20tide, https://en.wiktionary.org/wiki/floodtide