decomposes

/D IY0 K AH0 M P OW1 Z IH0 Z/
verb
  1. 1

    To separate or break down something into its components; to disintegrate or fragment

  2. 2

    To rot, decay or putrefy

Antonyms

Source: https://en.wiktionary.org/wiki/decompose, https://en.wiktionary.org/wiki/decomposes