DILIGENT Synonyms: 66 Similar and Opposite Words

Q: How is the word 'diligent' different from other adjectives like it?

Some common synonyms of diligent are assiduous , busy , industrious , and sedulous . While all these words mean "actively engaged or occupied," diligent suggests earnest application to some specific object or pursuit. // very diligent in her pursuit of a degree

Q: When might 'assiduous' be a better fit than 'diligent'?

The meanings of assiduous and diligent largely overlap; however, assiduous stresses careful and unremitting application. // assiduous practice

Q: When is it sensible to use 'busy' instead of 'diligent'?

While the synonyms busy and diligent are close in meaning, busy chiefly stresses activity as opposed to idleness or leisure. // too busy to spend time with the children

Q: In what contexts can 'industrious' take the place of 'diligent'?

Although the words industrious and diligent have much in common, industrious implies characteristic or habitual devotion to work. // industrious employees

Q: When would 'sedulous' be a good substitute for 'diligent'?

The words sedulous and diligent can be used in similar contexts, but sedulous implies painstaking and persevering application. // a sedulous investigation of the murder

diligent

adjective

ˈdi-lə-jənt

Definition of diligent next

as in engaged

involved in often constant activity a student who has been unceasingly diligent in pursuit of a degree in mathematics

Synonyms & Similar Words

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How is the word diligent different from other adjectives like it?

Some common synonyms of diligent are assiduous, busy, industrious, and sedulous. While all these words mean "actively engaged or occupied," diligent suggests earnest application to some specific object or pursuit.

very diligent in her pursuit of a degree

When might assiduous be a better fit than diligent?

The meanings of assiduous and diligent largely overlap; however, assiduous stresses careful and unremitting application.

assiduous practice

When is it sensible to use busy instead of diligent?

While the synonyms busy and diligent are close in meaning, busy chiefly stresses activity as opposed to idleness or leisure.

too busy to spend time with the children

In what contexts can industrious take the place of diligent?

Although the words industrious and diligent have much in common, industrious implies characteristic or habitual devotion to work.

industrious employees

When would sedulous be a good substitute for diligent?

The words sedulous and diligent can be used in similar contexts, but sedulous implies painstaking and persevering application.

a sedulous investigation of the murder

Example Sentences

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Recent Examples of diligent In the end, after a monthslong investigation and diligent forensic work, partial remains of 70 of the 110 victims were identified and returned to family members who, to this day, carry the pain of that day in 1996. —

Hank Tester, CBS News, 12 May 2026 The Devil’s Chair Trail was previously closed because of storm damage, but reopened about two weeks ago, thanks to the diligent work of county staff. —

Jaclyn Cosgrove, Los Angeles Times, 7 May 2026 From the nearby marina, boat trips to the mangroves (booked through the hotel's diligent concierge) and secret beaches depart regularly. —

Condé Nast, Condé Nast Traveler, 6 May 2026 Ownership was diligent in its effort to keep Buxton on board with the program; new executive chair Tom Pohlad even visited with the two-time all-star at his home in Georgia. —

John Shipley, Twin Cities, 4 May 2026 See All Example Sentences for diligent

Recent Examples of Synonyms for diligent

Adjective

For the fathers who have flocked to his page, his messages about continuing to show up as an engaged parent have clearly struck a chord.

— Christian Dashiell Published, Parents, 18 June 2026
More importantly, the entire team became more engaged, decisive and effective.

— Kent Merrell, Forbes.com, 18 June 2026