Length ranks your synonyms based on character count.
Informal words should be reserved for casual, colloquial communication.
More words related to erstwhile
adj. in the past
adv. previously in time or order
adj. obsolete, outdated
adv. in the past; occurred one time only
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.Cite This Source