Sapient

Sa"pi*ent (?), a. [L. sapiens, -entis, p. pr. of sapere to taste, to have sense, to know. See Sage, a.] Wise; sage; discerning; -- often in irony or contempt.

Where the sapient king
Held dalliance with his fair Egyptian spouse.
Milton.

Syn. -- Sage; sagacious; knowing; wise; discerning.