Capable of being threatened.

Not posing a threat.

Potentially fatal

(ecology) Any species of organism that is vulnerable to extinction in the near future

(medicine) A condition approximating an imminent abortion, where there is bleeding but the fetus remains attached to the uterine wall.

plural of threatened abortion

Not endangering the continued life of the subject.

In a threatening manner.

(archaic) Third-person singular simple present indicative form of threaten

(archaic) second-person singular simple present form of threaten