sobering

/S OW1 B ER0 IH0 NG/
verb
  1. 1

    (often with up) To make or become sober.

  2. 2

    (often with up) To overcome or lose a state of intoxication.

    โ€œIt took him hours to sober up.โ€

  3. 3

    To moderate one's feelings

adjective
  1. 1

    Causing more sober thought or concern.

    โ€œIt was a sobering thought that I had almost killed myself. That was something I wouldn't soon do on purpose again.โ€

Source: https://en.wiktionary.org/wiki/sober, https://en.wiktionary.org/wiki/sobering