Synonyms of ruinous in English:

ruinous


See definition of ruinous

adjective

1‘the spectre of a ruinous trade war loomed’

SYNONYMS

disastrous, devastating, catastrophic, calamitous, cataclysmic, crippling, crushing, dire, injurious, damaging, destructive, harmful

costly

ANTONYMS

beneficial

2‘lending money at ruinous interest rates’

SYNONYMS

extortionate, exorbitant, excessively high, sky-high, outrageous, inflated, more than can be afforded

British over the odds

informal criminal, steep

3‘a little to the west of the house is an old, ruinous chapel’

SYNONYMS

derelict, in ruins, ruined, gone to rack and ruin, dilapidated, tumbledown, ramshackle, broken-down, decrepit, in disrepair, falling to pieces, falling apart, crumbling, decaying, disintegrating

neglected, uncared-for

informal shambly

North American informal shacky

ANTONYMS

intact, well maintained