Antonyms of adj nonfatal

1 sense of nonfatal

Sense 1
nonfatal (vs. fatal) -- (not bringing death; "nonfatal heart attack")

fatal (vs. nonfatal) -- (bringing death)
        => deadly, deathly, mortal -- (causing or capable of causing death; "a fatal accident"; "a deadly enemy"; "mortal combat"; "a mortal illness")
        => deadly, lethal -- (of an instrument of certain death; "deadly poisons"; "lethal weapon"; "a lethal injection")
        => terminal -- (causing or ending in or approaching death; "a terminal patient"; "terminal cancer")

Similarity of adj nonfatal

1 sense of nonfatal

Sense 1
nonfatal (vs. fatal) -- (not bringing death; "nonfatal heart attack")
       => nonlethal -- (not capable of causing death)