partner

/ˈpɐːtnə/noun

The person someone shares a romantic relationship or home life with, such as a spouse.

Example sentences

“She moved to Boston with her partner last year.”
“Guests are welcome to bring their partners to the dinner.”

Also a business co-owner; a modifier like 'law partner' or 'life partner' settles which is meant.

Synonyms for partner

significant other
other half

On the Academic Word List. Find it in: Academic vocabulary.

Related words

collaborateTo work jointly with other people toward a shared aim.companionA person or animal that spends time with you or travels alongside you; a friend or partner.guardianA person who protects or watches over someone or something.divorceThe official ending of a marriage by law.orphanA child whose parents have died, or (less commonly) who has lost one parent.weddingThe ceremony at which two people are married.