Webster's Revised Unabridged Dictionary · 1913

Discreet

Discreet , adjective

[French discret, Latin discretus separated (whence the meaning reserved, prudent), past participle of discernere. See Discern, and compare Discrete.]

1.
Possessed of discernment, especially in avoiding error or evil, and in the adaptation of means to ends; prudent; sagacious; judicious; not rash or heedless; cautious.
It is the discreet man, not the witty, nor the learned, nor the brave, who guides the conversation, and gives measures to society. — Addison
Satire 's my weapon, but I 'm too discreet To run amuck, and tilt at all I meet. — Pope
The sea is silent, the sea is discreet. — Longfellow
2.
Differing; distinct. [Obsolete] — Spenser