weaken
(verb)
verb
1. lessen the strength of
- The fever weakened his body
Definition categories: change, alter, modify
2. become weaker
- The prisoner's resistance weakened after seven days
Definition categories: change, decrease, diminish, fall, lessen
3. destroy property or hinder normal operations
Similar word(s): counteract, countermine, sabotage, subvert, undermine
Definition categories: social, disobey
4. reduce the level or intensity or size or scope of
Definition categories: change, decrease, lessen, minify
5. lessen in force or effect