clearheaded

[ kleer-hed-id ]

/ ˈklɪərˈhɛd ɪd /

having or showing an alert mind.

Origin of clearheaded

First recorded in 1700–10; clear + head + -ed³

clear·head·ed·ly, adverb clear·head·ed·ness, noun

Then there was a cold and clearheaded gathering around the big map in the central control room.

A Yankee Flier with the R.A.F. |Rutherford G. Montgomery
Jeff stood a moment nursing, not his anger, but a clearheaded certainty that something must be done.

The Prisoner |Alice Brown
Mr. Bragg he pronounced to be an excellent master: clearheaded in his commands, and reasonable in his exactions.

That Unfortunate Marriage, Vol. 2(of 3) |Frances Eleanor Trollope
Clearheaded, simple-hearted, she had been always, and she was so still.

Brave Men and Women |O.E. Fuller

Who'd have thought that calm, clearheaded woman would ever have committed such a folly?

Hetty's Strange History |Anonymous