heightening

/HH AY1 T AH0 N IH0 NG/
verb
  1. 1

    To make high; to raise higher; to elevate.

  2. 2

    To advance, increase, augment, make larger, more intense, stronger etc.

    โ€œto heighten a flavor or a tintโ€

noun
  1. 1

    The act by which something is heightened or increased.

Source: https://en.wiktionary.org/wiki/heighten, https://en.wiktionary.org/wiki/heightening