verb

weaken

to weaken, to diminish, to undermine

The illness weakened his body.

The illness weakened his body.

The team began to weaken in the second half.

The team began to weaken in the second half.

((sth.)) to make (sth.) weaker The illness weakened his body.

to become weaker The team began to weaken in the second half.

Synonyms: diminish, reduce, undermine; Antonyms: strengthen, fortify

From the adjective 'weak' plus the verb-forming suffix '-en', meaning 'to make or become'.

The suffix '-en' often turns an adjective into a verb (e.g., shorten, brighten). Think of making something 'weak'.

This page is designed for learning support. Please use it as a learning reference, not as a formal reference.