sagacious

Use the formal adjective sagacious to describe someone who is wise and insightful like an advisor to the president or a Supreme Court justice.

Someone like an inspirational leader or an expert in a field who seeks knowledge and has foresight can be described as sagacious. If you comment on something at a deeper level, you are making a sagacious observation. The word is a descendent of Latin sagus "prophetic" and is related to the Old English word seek. Synonyms include discerning, insightful and another formal word perspicacious.

Definitions of sagacious
1

adj acutely insightful and wise

“observant and thoughtful, he was given to asking sagacious questions”
Synonyms:
perspicacious, sapient
wise
having or prompted by wisdom or discernment

adj skillful in statecraft or management

“an astute and sagacious statesman”
Synonyms:
politic
marked by artful prudence, expedience, and shrewdness

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