Back when
Previously and back when are semantically related in in the past topic. In some cases you can use "Previously" instead an adverb phrase "Back when".
Previously
Previously adverb - So as to precede something in order of time.
Back when and previously are semantically related in earlier topic. Sometimes you can use "Back when" instead an adverb "Previously".
Nearby Word: previous
Mutual synonyms
Both terms in one sentence
-
To be fair, they had previously met, back when Julie was part of Excelsior, a team of former teen superheroes who'd been hired to force the Runaways out of business.
Source: Token Minority Couple -
In fact, this show was previously the Trope Namer, back when this trope was named Pow Zap Wham Cam.
Source: Series / Batman -
He previously dated Victoria back when they were working for their respective agencies (The KGB and MI6 respectively), to the point that she was forced by her superiors between killing him and jeopardizing her mission.
Source: Sensual Slavs
Cite this Source
Previously and Back when. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/back_when/previously
Back when & Previously. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/back_when/previously>.
Previously or Back when. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/back_when/previously.
Google Ngram Viewer shows how "back when" and "previously" have occurred on timeline