significant other
noun
: a person who is important to one's well-being
especially
: a spouse or one in a similar relationship
Examples of significant other in a Sentence
Before you make such an important decision, you should talk it over with your significant other.
she has threatened to divorce her significant other if he doesn't stop gambling
Recent Examples on the Web
In previous years, the friends have even brought in their significant others to play matching characters.
—
Lydia Patrick, MSNBC Newsweek, 30 Oct. 2025
But a new study by researchers in Taiwan suggests that sleeping apart from your significant other may decrease psychological well-being.
—Angelica Stabile, FOXNews.com, 29 Oct. 2025
The WAGs watched as their significant others became the third quarterback-tight end duo in NFL history to record 75 touchdowns (including the playoffs), joining the elite company of Tom Brady and Rob Gronkowski and Philip Rivers and Antonio Gates, according to ESPN.
—Anna Lazarus Caplan, PEOPLE, 28 Oct. 2025
Allison Williams and Dave Franco are thrown together after their significant others die in a car crash.
—Brian Truitt, USA Today, 22 Oct. 2025
See All Example Sentences for significant other
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Lydia Patrick, MSNBC Newsweek, 30 Oct. 2025
But a new study by researchers in Taiwan suggests that sleeping apart from your significant other may decrease psychological well-being.
—Angelica Stabile, FOXNews.com, 29 Oct. 2025
The WAGs watched as their significant others became the third quarterback-tight end duo in NFL history to record 75 touchdowns (including the playoffs), joining the elite company of Tom Brady and Rob Gronkowski and Philip Rivers and Antonio Gates, according to ESPN.
—Anna Lazarus Caplan, PEOPLE, 28 Oct. 2025
Allison Williams and Dave Franco are thrown together after their significant others die in a car crash.
—Brian Truitt, USA Today, 22 Oct. 2025
See All Example Sentences for significant other
Cite this Entry
“Significant other.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/significant%20other. Accessed 1 Nov. 2025.
Copy CitationMedical Definition
significant other
noun
significant oth·er
-ˈət͟h-ər 
: a person who is important to one's well-being
especially
: a spouse or one in a similar relationship
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