Length ranks your synonyms based on character count.
Informal words should be reserved for casual, colloquial communication.
noun droning sound
Concept Thesaurus for word sibilation2. Sensation; special sensation; sound; specific sounds
Synonyms - noun
Synonyms - verbs
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Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.Cite This Source