verb

stagnate

to stand still, to become sluggish, to stop developing

The water will stagnate if it doesn't flow.

The water will stagnate if it doesn't flow.

His career began to stagnate.

His career began to stagnate.

((subject)) stagnates to stop developing or making progress His career began to stagnate.

Synonyms: languish, decline, stand still; Antonyms: grow, develop, flourish

From Latin 'stagnare' (to form a pool of standing water), from 'stagnum' (pool). Same root as the adjective stagnant.

Connect it to 'stagnant water'. To 'stagnate' is to become like that still, unmoving water.

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