as in submarine
a large sandwich on a long split roll
we shared a tuna sub at lunch
Synonyms & Similar Words
Relevance
as in substitute
a person or thing that takes the place of another
we had a sub in English today, so we didn't get our test results back
Synonyms & Similar Words
as in to substitute
to serve as a replacement usually for a time only
the weekend anchor is subbing for the station's main anchor all this week she subbed for middle school teachers in the district as needed
Synonyms & Similar Words
Example Sentences
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Recent Examples of sub
Abby Price, Travel + Leisure, 2 Sep. 2025
The August spike is owed in large part to its sub-brand, Onvo, which made 16,434 deliveries in August compared to a mere 5,976 in July.
—Victoria Yeo, CNBC, 2 Sep. 2025
Michael-Shawn Dugar, New York Times, 20 Aug. 2025
Greek yogurt can sub out for sour cream.
—The Washington Post, San Diego Union-Tribune, 20 Aug. 2025
See All Example Sentences for sub
Noun
This relaxed spot blends American and Italian flavors, serving up tasty subs, especially their famous cheesesteak.
—Abby Price, Travel + Leisure, 2 Sep. 2025
The August spike is owed in large part to its sub-brand, Onvo, which made 16,434 deliveries in August compared to a mere 5,976 in July.
—Victoria Yeo, CNBC, 2 Sep. 2025
Verb
Seattle can sub out Nwosu and Lawrence for Mafe and Hall and still keep the heat on the quarterback.
—Michael-Shawn Dugar, New York Times, 20 Aug. 2025
Greek yogurt can sub out for sour cream.
—The Washington Post, San Diego Union-Tribune, 20 Aug. 2025
See All Example Sentences for sub
Recent Examples of Synonyms for sub
substitute
Verb
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Taking the question further, and assuming the Fed capable of the magic that Democrats, Republicans and even libertarians ascribe to it, won’t private capital retreat overcome the Fed substituting itself for the marketplace in the first place?—
John Tamny,
Forbes.com,
7 Sep. 2025
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This article is for informational purposes only and does not substitute for professional medical advice.—
Nia Bowers,
USA Today,
4 Sep. 2025
Cite this Entry
“Sub.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/sub. Accessed 9 Sep. 2025.
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