/ ˌtemprəˈmentl; NAmE / adjective
1.
(usually disapproving ) having a tendency to become angry, excited or upset easily, and to behave in an unreasonable way :
You never know what to expect with her. She's so temperamental.
( figurative )
The printer's being temperamental this morning.
2.
connected with sb's nature and personality :
They are firm friends in spite of temperamental differences.
► tem·pera·men·tal·ly / -təli; NAmE / adverb :
I'm temperamentally unsuited to this job.