Coolheaded in a sentence as an adjective

To the contrary, that bit about legal advice seems a bit too coolheaded for even drug use.

I know they train for it, but the coolheaded professionalism there is remarkable - tower, other planes, all of them.

Coolheaded definitions

adjective

marked by calm self-control (especially in trying circumstances); unemotional; "play it cool"; "keep cool"; "stayed coolheaded in the crisis"; "the most nerveless winner in the history of the tournament"

See also: cool nerveless