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
- sexangularly
- sex appeal
- sex-appealing
- sexational
- sexationalism
- sex attractant
- sexavalent
- sex-blind
- sexboat
- sex bomb
- sex call
- sexcapade
- sex cell
- sexcentenary
- sex change
- sex character
- sex characteristic
- sex chromatin
- sex-chromosomal
- sex chromosome
- sex control
- sex-controlled
- sex crime
- sex criminal
- sex determinant