IPA: /rɪˈlɪdʒ.əs.nəs/
KK: /rɪˈlɪdʒ.əs.nəs/
The state or quality of being devoted to religion or having strong religious beliefs.
Her religiousness was evident in her daily practices and rituals.
Religiousness → It is formed from "religio" (from Latin, meaning to bind or to tie) and the suffix "-ness" (meaning the state or quality of). The word "religiousness" refers to the state of being bound or tied to religious beliefs or practices.
Think of being 'bound' ('religio') to your beliefs — that's what religiousness means.