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
Disha	-	Indian, Hindi, Marathi
Henrika	hen-REE-kah	Swedish
Nanda	-	Hinduism, Indian, Kannada, Tamil
Stoddard	['stɔdəd]
Oria	-	Italian
ArnbjØRg	-	Norwegian (Rare)