impatient

Synonyms: abrupt agog antsy anxious appetent ardent athirst avid breathless brusque chafing choleric curt demanding dying to eager edgy feverish fretful hasty having short fuse headlong hot-tempered hot under collar impetuous indignant intolerant irascible irritable itchy keen on pins and needles quick-tempered racing one’s motor restless ripe snappy straining sudden testy thirsty unforbearing unindulgent vehement violent

Antonyms: controlled easy-going enduring forbearing laid-back patient tolerant waiting willing