Filling in
Substitute and filling in are semantically related. In some cases you can use "Substitute" instead a verb phrase "Filling in".
Substitute
Substitute verb - To give up (something) and take something else in return.
Filling in and substitute are semantically related. Sometimes you can replace phrase "Filling in" with "Substitute", this terms are similar.
Both terms in one sentence
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There was an episode of Night Court that featured a substitute judge filling in for Harry; the substitute propositions Dan Fielding for a bribe, and Dan goes to the FBI.
Source: Right Hand vs. Left Hand -
E, the substitute teacher filling in for Miss Grotke, simply says "That happens".
Source: Western Animation / Recess -
On October 21, 2010, he became an official contributor and substitute anchor to MSNBC, filling in for Dylan Ratigan and Ed Schultz, among others.
Source: Creator / Cenk Uygur
Cite this Source
Substitute and Filling in. (2016). Retrieved 2026, August 08, from https://thesaurus.plus/related/filling_in/substitute
Filling in & Substitute. N.p., 2016. Web. 08 Aug. 2026. <https://thesaurus.plus/related/filling_in/substitute>.
Substitute or Filling in. 2016. Accessed August 08, 2026. https://thesaurus.plus/related/filling_in/substitute.
Google Ngram Viewer shows how "filling in" and "substitute" have occurred on timeline