Synonyms of deteriorate in English:

deteriorate


See US English definition of deteriorate

See UK English definition of deteriorate

verb

1‘his condition has deteriorated in the intensive care unit’

SYNONYMS
worsen, get worse, decline, be in decline, degenerate, decay
collapse, fail, fall, drop, sink, slump, slip, slide, go downhill, go backwards, go to rack and ruin, stagnate, wane, ebb
informal go to pot, go to the dogs, hit the skids, go down the toilet, go down the tubes
Australian, New Zealand informal go to the pack
rare retrograde
ANTONYMS

improve

2‘many of these materials deteriorate badly if stored in damp conditions’

SYNONYMS
decay, degrade, degenerate, break down, decompose, rot, putrefy, go bad, go off, spoil, perish
wither, atrophy, weaken, fade, break up, disintegrate, become dilapidated, crumble, fall down, collapse, fall apart, fall to pieces
archaic corrupt