A person with whom someone has an established romantic or sexual relationship: Ron and his latest significant other are having me over for dinner
More example sentences
- Stoke your tender feelings and take your significant other for a romantic evening that you'll recall fondly in your dotage.
- Bring a significant other for a romantic weekend getaway.
- Perhaps you want to show your significant other how much your relationship means to you.
Definition of significant other in:
- The US English dictionary