(it's a) small world

idiom

Definition of (it's a) small world

used to show surprise when one meets someone one knows at an unexpected place or finds out that one shares a friend, acquaintance, etc., with another personYou know him, too? Wow, it's a small world.

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“(it's a) small world.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/(it's%20a)%20small%20world. Accessed 28 January 2020.

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