Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “smarty-pants”


noun [C]     /ˈsmɑː.ti.pænts/ US  /ˈsmɑːr.t̬i-/ (plural smarty-pants) informal
someone who wants to appear to be clever: [as form of address] Okay, smarty-pants, you tell me how to do it then.Showing arrogance and conceitConfidence and self-assuranceBoasting
(Definition of smarty-pants noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of smarty-pants

Translations of “smarty-pants”

Word of the Day


physical activity that you do to make your body strong and healthy

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More