keep up with the Joneses
Meaning: People who try to keep up with the Joneses are people who feel it's important to show that they're as successful as others (such as their rich neighbours, "The Joneses").
- I'm surprised that Miriam worries about keeping up with the Joneses. I thought she was more mature than that.
- My grandma said, "Forget about keeping up with the Joneses. The people who matter in your life will respect and love you because of who you are, not because of what you've got or what sort of car you drive."
Variety: This is typically used in American English but may be used in other varieties of English too.