optimise

/AA1 P T AH0 M IH0 S/
verb
  1. 1

    (originally intransitive) To act optimistically or as an optimist.

  2. 2

    To make (something) optimal.

  3. 3

    To make (something) more efficient, such as a computer program.

  4. 4

    To become optimal.

Source: https://en.wiktionary.org/wiki/optimise, https://en.wiktionary.org/wiki/optimize