Describes a calm, unruffled state of mind or atmosphere; often used for a person's temperament or a peaceful scene.
She is always placid; I've never seen her get angry.
おおらかな気持ちで試験に臨んだ。
I faced the exam with a composed mind.
big-hearted; generous; magnanimous
Refers to a tolerant, forgiving, and open-minded personality; often used to describe someone who accepts others' mistakes or differences without pettiness.
父はおおらかな人で、私が失敗しても決して怒らなかった。
My father is a big-hearted person; he never got angry even when I made mistakes.
おおらかな心で人と接することが大切だ。
It's important to interact with people with a generous heart.
He has such a big-hearted personality that he doesn't mind small mistakes.
Even when trouble arises, she always stays calm and composed.
The parents raised their child in a relaxed, unrestrictive manner.
おおらか describes a generous, unfussy personality, while 伸びやか more broadly describes a relaxed, unconstrained quality in voice, movement, or atmosphere as well as people.