Length ranks your synonyms based on character count.
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.
Synonyms for prolongate
verb. make larger, longer
verb. extend, elongate
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.Cite This Source