sanctanimity means holiness of mind. Lexicurio rates it Sui generis — a strength score of 88 out of 100.
Why “sanctanimity” is a great word
SANCTANIMITY — [Noun] Holiness of mind; the quality of being spiritually pure or devout in thought. From Latin sanctus ("holy") + animus ("mind, spirit") + the English suffix -ity (forming abstract nouns). First attested in 1801. Unlike "sanctimoniousness," which implies a hollow, performative piety, or "magnanimity," which denotes a generous loftiness of spirit, sanctanimity is the genuine, interior state of a mind consecrated to devotion. It is the quiet light in a cloister at dawn, the unbroken focus of a solitary prayer, and the palpable stillness of a soul turned wholly inward—an integrity of spirit so complete it becomes its own sanctuary.