weakening
weak-en-ing
noun
The process of becoming less strong, effective, or intense over time.
"There was a noticeable weakening of public support."
verb
Making or becoming less strong, powerful, or effective; losing intensity.
"The storm is weakening as it moves inland."
Thesaurus
Synonyms: moderating, enfeebling, debilitative, enervating, debilitating
Antonyms: strengthening