Modifies a noun

• attention: This is a 24/7 operation demanding assiduous attention to detail.

• study: His assiduous studies of the cultural and economic trends his day.

• reader: The fact that Byron was an assiduous reader of Staël's works emerges clearly in his letters, but most importantly in his works.

• care: Then, for thirty years, she was the property of an impassioned shipowner who kept her in excellent condition with assiduous care.

• observer: An assiduous observer of culture, he showed precocious artistic talent and fierce ambition.

• student: His English teachers regard him as possibly the most gifted and assiduous student they have taught.

Modifying Another Word

• very: But before you do so, I should like to commend you for your very assiduous work on this case.

• equally: Loopholes closed Today's government has been equally assiduous.

Preposition: in

• prayer: Be assiduous in the prayer of adoration and teach it to the faithful.