Where does “bullethead” come from?

bullethead (English) comes from English head, from English -y, from Middle English -y, from Old English -iġ, from Proto-West Germanic -g, from Proto-Germanic -gaz, from Proto-Indo-European -ḱos — -y, -ic.

Ancestry of “bullethead”, step by step

bullethead traces back through two separate lines of ancestry.

via English head

StepLanguageWordMeaning
1EnglishheadThe part of the body of an animal or human which...
2English-yAdded to nouns and adjectives to form adjectives...
3Middle English-yDesignates an adjective, in many cases formed by...
4Old English-iġ-y, -ic
5Proto-West Germanic-gForms adjectives from nouns and verbs with a...
6Proto-Germanic-gaz-y
7Proto-Indo-European-ḱos-y, -ic

via English bullet

StepLanguageWordMeaning
1EnglishbulletA projectile, usually of metal, shot from a gun...
2English-etUsed to form diminutives, loosely construed
3Middle English-etForms diminutive nouns from nouns; in some words,...
4Old French-etUsed to form a diminutive, masculine noun;...
5Latin-ātused
6Proto-Italic-ātos
7Proto-Indo-European-éh₂tosForms adjectives from nouns, indicating the possession of a thing or a quality
Every word from Proto-Indo-European -ḱos
bullethead — Etymology, Origin & Word History | Etymology Explorer