devastating

adjective

Highly destructive or damaging.

SYNONYMS

brutalcalamitouscataclysmiccatastrophiccripplingdamagingdangerousdeadlydeath-dealingdeleteriousdestructivedetrimentaldisadvantageousdisastrousfatalfierceharmfulhurtfulinjuriouslethalnoxiousperniciousravagingruinoussavageviolentwounding