the wrong side of

Meaning

Older than (the stated age, typically a decade).
She looked to be the wrong side of forty.

Used in various other expressions to refer to an inimical or disfavoured condition.
the wrong side of the tracks, the wrong side of the law, the wrong side of history

Source: en.wiktionary.org

Examples

A door is what a dog is perpetually on the wrong side of. Ogden Nash

She 's no chicken she 's on the wrong side of thirty, if she be a day. Jonathan Swift

Don't take the wrong side of an argument just because your opponent has taken the right side. Baltasar Gracián

Well, I think that there's a very thin dividing line between success and failure. And I think if you start a business without financial backing, you're likely to go the wrong side of that dividing line. Richard Branson

I'm still the little southern girl from the wrong side of the tracks who really didn't feel like she belonged. Faye Dunaway

A little tough talk in the midst of a campaign or as part of a presidential debate cannot obscure a record of 30 years of being on the wrong side of defense issues. Dick Cheney

Words in the phrase

the wrong side of

Close letter words and terms

the writing's on the wall the written word the wrong end of the stick the wrong way the wrong way round the X strikes back