81 rigorous synonyms include meticulous, punctilious, conscientious, careful, diligent, attentive, ultra-careful, scrupulous, painstaking, and exact. Rigorous is an adjective, and its antonyms are lenient and lax. Here are some additional synonyms for "rigorous" with example sentences.
81 other ways to say rigorous.
Her research requires rigorous analysis techniques.
The team is undergoing rigorous training.