even-tempered 
adjective
Not easily annoyed or made angry: he was a gentle and even-tempered man...
- Obviously I can't imagine why these keys would ever be useful to someone as calm, level-headed and even-tempered as myself.
- One man is wrathful and always angry, and another even-tempered and never angry.
- She talked slowly, in her calm, even-tempered way.
Synonyms
serene, calm, composed, poised, tranquil, relaxed, easy-going, mild, mellow, unworried, untroubled, unbothered, unruffled, unflustered, unexcitable, imperturbable, placid, equable, stable, well balanced, level-headed
informal unflappable, together, laid-back, unfazed
rare equanimous
- bike chain
- bike clip
- bike courier
- bike helmet
- phosphorane
- phosphorate
- phosphorated
- phosphor bronze
- phosphor copper
- phosphoresce
- phosphorescence
- phosphorescent
- phosphoreted
- phosphoretic
- phosphoretted
- phosphoric
- phosphoric acid
- phosphoric anhydride
- phosphoric chloride
- phosphoriferous
- phosphorisation
- phosphorise
- phosphorised
- Phosphorist
- phosphorite