Synonyms & related words for arduous

Find synonyms, related words, and the definition of arduous — including grueling, toilsome, laborious, backbreaking, operose, strenuous. Dendril is a free visual thesaurus that shows them on an interactive map where stronger matches sit closer to the center — no signup, no ads.

Words related to arduous

Explore words related to arduous — words associated with it, words that go with it, and its nearest matches in meaning. Related words include straining, laboriousness, arduously, toilful, tedious, arduousness, wearying, onerousness. Click any word to make it the center of the map and keep exploring the web of connections.

Synonyms for arduous

Common synonyms for arduous include grueling, toilsome, laborious, backbreaking, operose, strenuous, hard, exhausting — words that share a close meaning. Hover or tap any word on the map for its definition and part of speech.

Where does arduous come from?

The word arduous breaks down into one root of Latin origin: the root ardu-, from Latin arduus (“steep, hard”). Explore each root to see other English words built from the same source.