Learn how to say Testy correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word testy:
adjective (testier, testiest)
easily irritated; impatient and somewhat bad-tempered:
his testy, disapproving father
she could see him growing quite testy beneath that polished urbanity
late Middle English (in the sense ‘headstrong, impetuous’): from Anglo-Norman French testif, from Old French teste ‘head’, from Latin testa ‘shell’