IPA: /ɪˈræsɪbəl/
KK: /ɪˈræsɪbəl/
The quality of being easily angered or having a quick temper.
His irascibleness made it difficult for him to maintain friendships.
Irascibleness → It is formed from "irascibilis" (from Latin, meaning easily angered) and the suffix "-ness" (meaning the state or quality of). The word describes the state of being easily angered or having a tendency to become angry.
Think of 'easily angered' ('irascibilis') to remember that 'irascibleness' refers to the quality of being prone to anger.