All cool-headed synonyms

adj cool-headed

• calm — A calm person does not show or feel any worry, anger, or excitement.
• collected — An author's collected works or letters are all their works or letters published in one book or in a set of books.
• composed — If someone is composed, they are calm and able to control their feelings.
• imperturbable — incapable of being upset or agitated; not easily excited; calm: imperturbable composure.
• levelheaded — having common sense and sound judgment; sensible.
• unemotional — pertaining to or involving emotion or the emotions.
• unflappable — not easily upset or confused, especially in a crisis; imperturbable.
• unruffled — calm; not emotionally upset or agitated; steady; unflustered: He became all excited, but she remained unruffled.
• untroubled — without trouble, discomfort, or disturbance: an easy, untroubled life; He was untroubled by daily setbacks.
• unexcited — stirred emotionally; agitated: An excited crowd awaited the arrival of the famed rock group.