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Assiduity

//ˌæs.ɪˈdjuː.ɪ.ti// noun

Noun

1
Great and persistent toil or effort. countable, uncountable
"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[…]"
2
great and constant diligence and attention wordnet
3
Constant personal attention, solicitous care. countable, in-plural, uncountable
"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."

From Latin assiduitas, from Latin assiduus. Equivalent to assiduous + -ity.

Unscramble this word: assiduity