1. having a calm, unemotional temperament; not easily excited or upset

Examples

• Despite the chaos around him, he remained phlegmatic and focused on his work.
• Her phlegmatic response to the criticism surprised everyone.
• The coach’s phlegmatic demeanor helped keep the team calm during the crisis.
• He has a phlegmatic personality that serves him well in stressful situations.
• Even when receiving good news, she maintained her characteristically phlegmatic expression.
• The phlegmatic judge listened to both arguments without showing any emotion.