adj. 25B6; adjective CATASTROPHIC, calamitous, cataclysmic, tragic; devastating, ruinous, harmful, dire, terrible, awful, shocking, appalling, dreadful; black, dark, unfortunate, unlucky, ill-fated, ill-starred, inauspicious; formal grievous.
DISASTROUS
Meaning of DISASTROUS in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012