Bill (English)
Where does "Bill" come from?
The given name 'Bill' functions as a diminutive of 'William'[1]. The name 'William' itself descends through Middle English and Anglo-Norman from Old High German 'Willahelm', rooted in the Proto-Germanic elements '*Wiljahelmaz', combining '*wiljô' meaning 'will' and '*helmaz' meaning 'helmet'[2]. These Germanic roots trace ultimately to the Proto-Indo-European roots '*welh₁-' meaning 'to choose, wish, want' and '*ḱel-' meaning 'to cover, conceal, save'[2].
Open questions
- It remains unclear how the initial W of William shifted to a B in the formation of Bill, though it may reflect a medieval trend of swapping letters. [1]
Full etymology tree
- Bill (English), 'A diminutive of the male given name William.'
- derived William (English), 'radiotelephony clear-code word for the letter W.'
- inherited William (Middle English), 'a male given name, equivalent to English William'
- inherited Willame (Anglo-Norman)
- inherited Willahelm (Old High German)
- inherited *Wiljahelmaz (Proto-Germanic), 'a male given name'
- compound *wiljô (Proto-Germanic), 'will, wish, desire'
- inherited *welh₁- (Proto-Indo-European), 'to choose'
- compound *helmaz (Proto-Germanic), 'helmet'
- inherited *ḱel- (Proto-Indo-European), 'to cover'
- compound *wiljô (Proto-Germanic), 'will, wish, desire'
- inherited *Wiljahelmaz (Proto-Germanic), 'a male given name'
- inherited Willahelm (Old High German)
- inherited Willame (Anglo-Norman)
- inherited William (Middle English), 'a male given name, equivalent to English William'
- derived William (English), 'radiotelephony clear-code word for the letter W.'
Descendants and derived words
- Billary (English)
- Bill Williams River (English)
- Billy (English)
Related words
Sources
Updated October 2026
Etymology data from Wiktionary, CC BY-SA 4.0 · About Miraris