Definition

A close friend or peer you feel an almost sibling-like bond with; someone who shares your vibe, sense of humor, or outlook so completely that you feel like you could be twins.

Example Usage

Me and Sarah have been twins since freshman year—we literally finish each other's sentences.

Origin

Modern slang repurposing of 'twin' from biological connection to emotional/social connection, popularized in Gen-Z and internet culture.

Fun Fact

Often used affectionately in online communities and can be shortened to just 'twin' as a term of endearment between friends.

Source: Definition backfill (hailey)

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