assiduity means great and persistent toil or effort. Lexicurio rates it Rare gem — a strength score of 83 out of 100.
assiduity is pronounced /ˌæs.ɪˈdjuː.ɪ.ti/.
Why “assiduity” is a great word
ASSIDUITY — [Noun] Constant and diligent attention or effort applied to a task or duty. From Latin *assiduitas* (“constant presence, continual application”), from *assiduus* (“constantly present, diligent”), itself from *assidēre* (“to sit by or near”), from *ad-* (“to, near”) + *sedēre* (“to sit”). Unlike “diligence,” which emphasizes earnest, energetic application, or “perseverance,” which focuses on persistence against obstacles, *assiduity* is the unremitting, quiet constancy of presence. It is the scribe’s hand tracing the same vellum character for the ten-thousandth time, the watchmaker’s patient adjustment of a hairspring under a loupe, and the scholar’s lamp burning long after midnight—a devotion measured not in grand breakthroughs, but in the silent, seated accumulation of hours.
noun
- Great and persistent toil or effort.“During the whole time of his abode in the university he generally spent thirteen hours of the day in study; by which assiduity besides an exact dispatch of the whole course of philosophy, he read over in a manner all classic authors that are extant[…]”
- Constant personal attention, solicitous care.“With difficulty could man be born into the world, or as soon as born would he die, leaving life at the very threshold of existence, unless the friendly hand of the careful matron, and the affectionate assiduities of the nurse, lent their aid to the helpless babe.”