IPA: /rɪˈbɛljəsnəs/
KK: /rɪˈbɛljəsnəs/
The quality or state of resisting authority or control, often by refusing to obey rules or norms.
Her rebelliousness often led her to challenge the school's strict rules.
Rebelliousness → It is formed from "re-" (meaning again) and "bellare" (meaning to wage war). The suffix "-ous" (meaning full of) and "-ness" (meaning the state of) are added to indicate the state of being full of waging war against authority. Thus, rebelliousness refers to the state of resisting or waging war against established authority or control.
Think of 'waging war' ('bellare') against something 'again' ('re-') — that's why rebelliousness means being in a state of resisting authority.