Not safe against attack or mishap; liable to danger or risk; exposed to hazard or peril; insecure.

Used as past participle: exposed to peril, endangered.

That is or has been exposed to danger.

Not enjoying safety; exposed to danger or risk.

In extended use: placed in an extremely hazardous position or situation; (of a case or situation) desperate; lost. Now rare.

Unsafe; exposed to danger; not firm; liable to give way, fail, or be overcome.

(un-, prefix1 affix 1.)

That is in a state of danger or ruin (as if from shipwreck); threatened. Also: = naufragous, adj. (in later use as a grandiloquent epithet).

Exposed to danger, imperilled.

exposed to risk.

Endangered, exposed to peril.

That is exposed to the possibility of loss, harm, or other adverse or unwelcome circumstance. Also: (of a list, etc.) comprising those exposed in…