Old as the hills
Once and old as the hills are semantically related. in old topic. In some cases you can use "Once" instead an adjective phrase "Old as the hills".
Once
Once adjective - Having been such at some previous time.
Old as the hills and once are semantically related. Sometimes you can use "Old as the hills" instead an adjective "Once".
Mutual synonyms
Related pairs
Cite this Source
Once and Old as the hills. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/old_as_the_hills/once
Old as the hills & Once. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/old_as_the_hills/once>.
Once or Old as the hills. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/old_as_the_hills/once.