Synonyms for arduous | Synonym.com

Synonyms and antonyms for arduous

1. arduous (adj.)

characterized by effort to the point of exhaustion; especially physical effort

Synonyms: Antonyms:

2. arduous (adj.)

difficult to accomplish; demanding considerable mental effort and skill

Synonyms: Antonyms:

3. arduous (adj.)

taxing to the utmost; testing powers of endurance

Synonyms: Antonyms: