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
Raanan	-	Hebrew
Tapani	TAH-pah-nee	Finnish
Balchin	['bɔ:ltʃin]
Anjelica	an-JEL-i-kə	English (Modern)
Ndidi	-	Western African, Igbo
Torger	-	Norwegian