Baby name pickerby KYO360

BoyEnglish

Billy

Diminutive of Bill or William, meaning resolute protector.

Meaning and origin

Billy is a diminutive of Bill, a shortened form of William.

How to pronounce Billy

English (US)BIL-ee

About this entry

Drafted with the help of an AI model, then checked by a person. Last checked on 16 September 2026.

The sources behind this entry are listed in the app.