Where does “bubblehead” come from?

bubblehead (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.

bubblehead (English): A stupid person; A submariner; bubble-head; A...

Definitions

  1. A stupid person; A submariner; bubble-head; A...

Ancestry of “bubblehead”, step by step

bubblehead 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 bubble

StepLanguageWordMeaning
1EnglishbubbleA spherically contained volume of air or other...
2Englishanti-Against, hostile to; Contrasting with the norm;...
3Ancient Greekἀντι-anti-, against; like, reminiscent of
4Ancient Greekᾰ̓ντῐ́opposite
Every word from Proto-Indo-European -ḱosEvery word from English -yEvery word from Old English -iġ