weaponise

/W EH1 P AH0 N AY0 Z/
verb
  1. 1

    To make into a weapon.

    โ€œAnything can be weaponized. A big enough rock, dropped from a sufficient height, is a very good weapon.โ€

  2. 2

    To make more effective as a weapon.

    โ€œTo weaponize anthrax it is made more distributable, not more virulent.โ€

Source: https://en.wiktionary.org/wiki/weaponise, https://en.wiktionary.org/wiki/weaponize