Word Type

Verb

The word "weaken" can be used as a verb.

Word Relationships

Opposites (Antonyms)

strengthen strengthen

Derived Terms

weaken up

Derived From

weak

Broader Terms (Hypernyms)

alter blunt change deaden decrease diminish disobey fall lessen minify modify

Manner Of

change decrease

Related Terms

weak weakness

Synonym Network

adulterate attenuate cramp cripple dampen de escalate debase debilitate depress devitalize dilute enervate enfeeble exhaust impair impoverish invalidate lessen lower reduce relax sabotage shake stagger undermine unman unnerve unstring

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.