drop out

/D R AA1 P AW1 T/
verb
  1. 1

    To leave (school, a race, etc.) prematurely and voluntarily.

    โ€œNothing went well in high school, so he dropped out.โ€

  2. 2

    To opt out of conventional society.

  3. 3

    (of sound, electronic signal, etc.) To be lost or momentarily interrupted.

    โ€œI can't make phone calls because the line keeps dropping out.โ€

Source: https://en.wiktionary.org/wiki/drop%20out