Antonyms for the word "demilitarizing" include "militarizing," "arming," "fortifying," "weaponizing," and "strengthening." These words refer to the opposite of demilitarizing, which is the process of reducing or removing the military presence or power from a particular region or country. Instead, militarizing refers to the process of increasing or establishing military strength in a particular region or country through military build-up or expansion. Arming, fortifying, and weaponizing all refer to the process of strengthening military forces by providing them with new or more advanced weaponry and defenses. Strengthening refers to the overall improvement of a military's capacity and resources.