See sagacious in Webster's New World Roget's A-Z Thesaurus II
adjective
Possessing or showing sound judgment and keen perception:
knowing, sage, sapient, wise1. See wisePossessing, proceeding from, or exhibiting good judgment and prudence:
balanced, commonsensible, commonsensical, judicious, levelheaded, prudent, rational, reasonable, sage, sane, sapient, sensible, sound2, well-founded, well-grounded, wise1. See reason, sane
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