Webster's Revised Unabridged Dictionary · 1913

Sedulous

Sedulous (?; 135) , adjective

[Latin sedulus, perhaps from sedere to sit, and so akin to English sit.]

Diligent in application or pursuit; constant, steady, and persevering in business, or in endeavors to effect an object; steadily industrious; assiduous; as, the sedulous bee.
What signifies the sound of words in prayer, without the affection of the heart, and a sedulous application of the proper means that may naturally lead us to such an end? — L'Estrange