Antonyms of adj injurious

1 sense of injurious

Sense 1
deleterious, hurtful, injurious -- (harmful to living things; "deleterious chemical additives")

INDIRECT (VIA harmful) -> harmless -- (not causing or capable of causing harm; "harmless bacteria"; "rendered the bomb harmless")

Similarity of adj injurious

1 sense of injurious

Sense 1
deleterious, hurtful, injurious -- (harmful to living things; "deleterious chemical additives")
       => harmful (vs. harmless) -- (causing or capable of causing harm; "too much sun is harmful to the skin"; "harmful effects of smoking")