Relevance
Relevance ranks synonyms and suggests the best matches based on how closely a synonym’s sense matches the sense you selected.
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Complexity
Complexity sorts synonyms based on their difficulty. Adjust it higher to choose from words that are more complex.
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Length
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Common words appear frequently in written and spoken language across many genres from radio to academic journals.
Informal words should be reserved for casual, colloquial communication.
adj difficult; requiring hard work
See more synonyms for strenuous

Antonyms for most energyconsuming

Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.
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