Synonyms of the word 
CATASTROPHIC → HARMFUL - RUINOUS
catastrophic
- adj. Of or pertaining to a catastrophe.
- adj. Disastrous; ruinous.
harmful
- adj. of a kind likely to be damaging; injurious.
ruinous
- adj. Causing ruin; destructive, calamitous.
- adj. Extremely costly; so expensive as to cause financial ruin.
- adj. Characterized by ruin; ruined; dilapidated; as, an edifice, bridge, or wall in a ruinous state.
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