is similar to
eliminating danger by compensating automatically for a failure or malfunction
"a fail-safe device in a nuclear weapon to deactivate it automatically in the event of accident"
is similar to
freed from danger or blame or obligation
"I let him off the hook with a mild reprimand"
is similar to
thought to be devoid of risk
is similar to
free from danger or injury
"the children were found safe and sound"
see also
not causing or capable of causing harm
"harmless bacteria"; "rendered the bomb harmless"
see also
not injured physically or mentally
see also
free from danger or risk
"secure from harm"; "his fortune was secure"; "made a secure place for himself in his field"
see also
immune to attack; impregnable
"gunners raked the beach from invulnerable positions on the cliffs"