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
Robert Lea, Space.com, 20 Feb. 2026
The first series was hosted by Patton Oswalt and aired on both Fox and Prime Video, with the former sub-licensing to the latter.
—Max Goldbart, Deadline, 18 Feb. 2026
Sarah Hepola, Dallas Morning News, 18 Feb. 2026
Javier Sanoja is the team’s super-utility player who can sub in at second base, third base, shortstop and any of the outfield positions whenever needed.
—Jordan McPherson, Miami Herald, 17 Feb. 2026
See All Example Sentences for sub
Noun
Using the James Webb Space Telescope and the Atacama Large Millimeter/sub-millimeter Array , astronomers have investigated 70 dusty, star-forming galaxies at the very edge of the universe.
—Robert Lea, Space.com, 20 Feb. 2026
The first series was hosted by Patton Oswalt and aired on both Fox and Prime Video, with the former sub-licensing to the latter.
—Max Goldbart, Deadline, 18 Feb. 2026
Verb
No pressure, just subbing for one of the world’s most famous women.
—Sarah Hepola, Dallas Morning News, 18 Feb. 2026
Javier Sanoja is the team’s super-utility player who can sub in at second base, third base, shortstop and any of the outfield positions whenever needed.
—Jordan McPherson, Miami Herald, 17 Feb. 2026
See All Example Sentences for sub
Recent Examples of Synonyms for sub
substitute
Verb
-
Prize is not transferable, and no substitution may be made, except by CBS who reserves the right to substitute a prize with another prize of equal or greater value if the prize or portion of the prize is not available for any reason as determined by the CBS in its sole discretion.—
CBS News Philadelphia Staff,
CBS News,
26 Feb. 2026
-
Young Man in a Hurry substitutes status anxiety for race.—
Helen Lewis,
The Atlantic,
24 Feb. 2026
Cite this Entry
“Sub.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/sub. Accessed 28 Feb. 2026.
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