1. easily provoked to anger; very irritable: an irascible old man.
2. characterized or produced by anger: an irascible response.
1350-1400; Middle English irascibel < Late Latin īrāscibilis, equivalent to Latin īrāsc– (stem of īrāscī to grow angry; equivalent to īr ( a ) ire + -ā- theme vowel + -sc- inchoative suffix + -ī infinitive ending; see -esce) + –ibilis -ible
“The most irascible person is most likely to become apathetic in dangerous situations.”
~ Franz Grillparzer ~