IPA: //ˈiːziˌɡoʊɪŋnəs//
KK: /ˈiːziˌɡoʊɪŋnəs/
The quality of being relaxed and not easily upset or stressed.
Her easygoingness made her a favorite among her friends.
Easygoingness → It is formed from "easy" (from Old English *æsiġ*, meaning free from difficulty) and "going" (from Old English *gān*, meaning to move or proceed) combined with the suffix "-ness" (meaning the state or quality of). The word "easygoingness" refers to the quality of being relaxed and unconcerned, moving through life without stress or difficulty.
Think of being 'free from difficulty' ('easy') and 'moving' ('going') in a relaxed manner — that's what easygoingness means.