neatening

/N IY1 T AH0 N IH0 NG/
verb
  1. 1

    To make neat; arrange in an orderly, tidy way; to tidy.

    โ€œShe made a frantic attempt to neaten her hair.โ€

Source: https://en.wiktionary.org/wiki/neaten, https://en.wiktionary.org/wiki/neatening