One
One adjective - Being the one or ones of a class with no other members.
Whilom
Whilom adjective - Having been such at some previous time.
One and whilom are semantically related in in the past topic. Sometimes you can use "One" instead an adverb "Whilom".
Mutual synonyms
Cite this Source
Whilom and One. (2016). Retrieved 2026, July 29, from https://thesaurus.plus/related/one/whilom
One & Whilom. N.p., 2016. Web. 29 Jul. 2026. <https://thesaurus.plus/related/one/whilom>.
Whilom or One. 2016. Accessed July 29, 2026. https://thesaurus.plus/related/one/whilom.
Google Ngram Viewer shows how "one" and "whilom" have occurred on timeline