Antonym of dangerous

Antonyms of adj dangerous

2 senses of dangerous

Sense 1:

dangerous (vs. safe), unsafe

safe (vs. dangerous)
fail-safeoff the hook(predicate)risk-free, riskless, unhazardoussafe and sound, unhurt

Sense 2:

dangerous, grave, grievous, serious, severe, life-threatening

INDIRECT (VIA critical) -> noncritical, noncrucial