SYNONYMS AND RELATED EXPRESSIONS
arduous
adjective
Requiring considerable effort or endurance.
Local English device voice, when available. This is not a recorded dictionary pronunciation.
Requiring sustained effort
Closest synonyms
Related words and expressions
These extend or explain the idea and may require a different sentence structure.
Usage distinction
Return to topBackbreaking emphasizes physical effort; arduous also fits demanding intellectual work.
CHECK THE MEANING IN CONTEXT
See arduous in use
Restoring the damaged manuscript was an arduous task.
Completing the transcript remained arduous, requiring repeated checks against the audio.
Compare an alternative with the original word in each passage. Shared meanings do not make every pair interchangeable.
Synonym reference scope and sources
The groups distinguish the senses selected for this study entry. Closest synonyms and broader related expressions have separate labels. The listed sources support lexical selection; not every phrase is a direct quotation from a source.
How the synonym reference was prepared / WordNet 3.0 license