agonizing

/AE1 G AH0 N AY0 Z IH0 NG/
verb
  1. 1

    To writhe with agony; to suffer violent anguish.

  2. 2

    To struggle; to wrestle; to strive desperately, whether mentally or physically.

noun
  1. 1

    The act of one who agonizes.

adjective
  1. 1

    Causing physical or mental agony.

    โ€œIt was an agonizing twenty-minute wait for the results.โ€

Source: https://en.wiktionary.org/wiki/agonize, https://en.wiktionary.org/wiki/agonizing