significant

significant other

A person with whom one is in a serious romantic relationship. Primarily heard in US. Since Kelly didn't have a significant other, she attended her friend's wedding alone.

a significant other

(mainly American)

a person that someone is married to or who they have a serious sexual or romantic relationship with (not used with the ) The ad read, 'Take your significant other to the Café Carlyle for a romantic night out.'

Common Names:

Name	Pronounced	Usage
Cymone	see-MON	English (Rare)
Hicks	[hiks]
DraŽEnka	drah-ZHEN-kah	Croatian
Vespasianus	-	Ancient Roman
Wayra	-	Native American, Quechua
Margarete	mahr-gah-RE-tə	German