Back up
Back up verb - Move backwards from a certain position.
Sit in
Sit in verb - Attend as a visitor.
Mutual synonyms
Both terms in one sentence
- In order to back up his statement, he led the crew to a part of the continuum inhabited by a group of Q who did absolutely nothing but sit in one spot - having done ''literally everything'.
Source: In the Doldrums
Cite this Source
Sit in and Back up. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/back_up/sit_in
Back up & Sit in. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/back_up/sit_in>.
Sit in or Back up. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/back_up/sit_in.
Google Ngram Viewer shows how "back up" and "sit in" have occurred on timeline