sedulity

He did not write very rapidly; and he corrected, both in MS. and in proof, with the utmost sedulity.

There is nothing more operative than sedulity and diligence.

Spohr remained under the care of Dufour until he was twelve years old, and devoted himself to his work with great sedulity.

Very few persons practise serious self-examination at all; and none employ the power of self-inspection with that carefulness and sedulity with which they ought.

Upton conjectures that Leicester's displeasure was incurred for "some kind of officious sedulity in Spenser, who much desired to see his patron married to the Queen."