37 diligent synonyms include industrious, hard-working, assiduous, conscientious, particular, punctilious, meticulous, painstaking, rigorous, and exacting. Diligent is an adjective, and its antonyms are lazy and casual. Here are some additional synonyms for "diligent" with example sentences.
37 other ways to say diligent.
A diligent effort leads to success.
His diligent work paid off greatly.
She thanked her diligent helper.
They are diligent in their studies.