Antonyms of adj unsafe

3 senses of unsafe

Sense 1
insecure (vs. secure), unsafe -- (lacking in security or safety; "his fortune was increasingly insecure"; "an insecure future")


Sense 2
dangerous (vs. safe), unsafe -- (involving or causing danger or risk; liable to hurt or harm; "a dangerous criminal"; "a dangerous bridge"; "unemployment reached dangerous proportions")


Sense 3
insecure, unsafe -- (not safe from attack)

INDIRECT (VIA vulnerable) -> invulnerable -- (immune to attack; impregnable; "gunners raked the beach from invulnerable positions on the cliffs")

Similarity of adj unsafe

3 senses of unsafe

Sense 1
insecure (vs. secure), unsafe -- (lacking in security or safety; "his fortune was increasingly insecure"; "an insecure future")
       => precarious, shaky -- (not secure; beset with difficulties; "a shaky marriage")
       => unguaranteed, unsecured -- (without financial security; "an unsecured note")
          Also See-> dangerous#1, unsafe#2; unprotected#1; vulnerable#1

Sense 2
dangerous (vs. safe), unsafe -- (involving or causing danger or risk; liable to hurt or harm; "a dangerous criminal"; "a dangerous bridge"; "unemployment reached dangerous proportions")
       => breakneck -- (moving at very high speed; "a breakneck pace")
       => chancy, chanceful, dicey, dodgy -- (of uncertain outcome; especially fraught with risk; "an extremely dicey future on a brave new world of liquid nitrogen, tar, and smog"- New Yorker)
       => desperate -- ((of persons) dangerously reckless or violent as from urgency or despair; "a desperate criminal"; "taken hostage of desperate men")
       => hazardous, risky, wild -- (involving risk or danger; "skydiving is a hazardous sport"; "extremely risky going out in the tide and fog"; "a wild financial scheme")
       => insidious -- (intended to entrap)
       => mordacious -- (biting or given to biting; "they deliberately gave me a skittish and mordacious mount")
       => on the hook (predicate) -- (caught in a difficult or dangerous situation; "there I was back on the hook")
       => parlous, perilous, precarious, touch-and-go -- (fraught with danger; "dangerous waters"; "a parlous journey on stormy seas"; "a perilous voyage across the Atlantic in a small boat"; "the precarious life of an undersea diver"; "dangerous surgery followed by a touch-and-go recovery")
       => self-destructive, suicidal -- (dangerous to yourself or your interests; "suicidal impulses"; "a suicidal corporate takeover strategy"; "a kamikaze pilot")
       => treacherous, unreliable -- (dangerously unstable and unpredictable; "treacherous winding roads"; "an unreliable trestle")
          Also See-> insecure#2, unsafe#1; vulnerable#1

Sense 3
insecure, unsafe -- (not safe from attack)
       => vulnerable (vs. invulnerable) -- (susceptible to attack; "a vulnerable bridge")