uncrochety
/ˌʌnˈkrɒtʃɪti/Definitions
1. adjective
not having a tendency to be irritable or bad-tempered; even-tempered
“She was known for being an unflappable and uncrachety colleague, always willing to help her team.”
2. adjective
not given to outbursts of temper; even-tempered
“The coach praised his uncrachety player for keeping his cool during the intense game.”