even-tempered
US /ˌiːvənˈtempərd/
UK /ˌiːvənˈtempərd/

1.
tenang, sabar
not easily annoyed or upset; calm and steady
:
•
She's known for being very even-tempered, rarely getting angry.
Dia dikenal sangat tenang, jarang marah.
•
An even-tempered leader can handle crises calmly.
Seorang pemimpin yang tenang dapat menangani krisis dengan tenang.