adj. 25B6; adjective FATAL, deadly, mortal, death-dealing, life-threatening, murderous, killing; poisonous, toxic, noxious, venomous; dangerous, destructive, harmful, pernicious; poetic/literary deathly, nocuous; archaic baneful.
harmless, safe.
LETHAL
Meaning of LETHAL in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012