Jeffy

Jeffy is an affectionate diminutive form of the name Jeffrey or Jefferson, which themselves derive from the medieval name Geoffrey of Germanic origins meaning 'peace pledge' or 'divine peace.' Unlike Jeffrey, which has been a mainstream name for decades, Jeffy maintains a distinctly informal and endearing quality. While sometimes used as a nickname, some parents choose it as a given name to capture a perpetually youthful and approachable character. The '-y' ending creates a friendly, diminutive feel that's common in familiar forms of names. Though not typically among popular rankings as a formal given name, Jeffy has a cheerful, unpretentious quality that appeals to parents seeking a name with an inherently warm and affable impression.

Pronounced JEF-ee.

As of October 2026, Jeffy ranked #11713 in US births in 2003 SSA, peaked at #3407 in 1958.