180

noun
  1. 1

    An instance of spinning 180 degrees, so that one is facing in the opposite direction.

    โ€œHe did a 180 off the diving board.โ€

  2. 2

    The exact opposite.

    โ€œThe friendly welcome was a 180 from what she had been expectingโ€

  3. 3

    (by extension) A complete change of direction or opinion.

    โ€œShe used to like turnips, but she did a 180 and now hates them.โ€

Source: https://en.wiktionary.org/wiki/180