Webster's Revised Unabridged Dictionary · 1913

Exigent

Exigent , adjective

[Latin exigens, -entis, present participle of exigere to drive out or forth, require, exact. See Exact.]

Exacting or requiring immediate aid or action; pressing; critical.
At this exigent moment. — Burke

Exigent , noun

1.
Exigency; pressing necessity; decisive moment. [Obsolete]
Why do you cross me in this exigent? — Shakespeare
2.
(o. Eng. Law) The name of a writ in proceedings before outlawry. — Abbott