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By Madison Dresler · Aug 2026

Theory

OriginEnglish word name from Greek

Meaning"idea, speculation"

GenderGirl

Also a boy's nameShow me Theory as a boy's name

About Theory

The name Theory peaked for girls at #6092 in 2025. Theory is occasionally used for boys in 2025.

Theory in blog posts

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Two Syllable Names for Girls

6 Letter Girl Names

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