Relevance ranks synonyms and suggests the best matches based on how closely a synonym’s sense matches the sense you selected.
Relevance
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Length
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Synonyms for more split-second

adj immediate, urgent

Antonyms for more split-second

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