sedulity

[si-doo-li-tee, -dyoo-]

noun

Origin of sedulity

1535–45; < Latin sēdulitās, equivalent to sēdul(us) sedulous + -itās -ity

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

There is nothing more operative than sedulity and diligence.
Book of Wise Sayings
W. A. Clouston
To the best of their ability the four strove to shield her without her being able to perceive their sedulity.
The Unwilling Vestal
Edward Lucas White

1540s, from Latin sedulitas "assiduity, application," noun of quality from sedulus (see sedulous).