detrimental

adjective

Tending to cause harm.

SYNONYMS

adversebadbalefulcalamitouscancerouscorruptingcounterproductivedamagingdangerousdeadlydeleteriousdestructivedisastrousenvironmentally unfriendlyevilfatalharmfulhurtfulillinimicalinjuriouslethalmaleficmaleficentmalignmalignantnoxiousperniciouspoisonousprejudicialprejudiciousruinousundesirableunfavourableunfortunateunhealthyunwholesome