Length ranks your synonyms based on character count.
Informal words should be reserved for casual, colloquial communication.
Synonyms for perdurable
adj. without pause; endless
adj. infinite, never-ending
adj. death-defying, imperishable
adj. limitless, without end
adj. enduring, unending
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.Cite This Source