Where does “headbobbing” come from?

headbobbing (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.

headbobbing (English): A stereotypic animal behaviour in which the head...

Definitions

  1. A stereotypic animal behaviour in which the head...

Ancestry of “headbobbing”, step by step

headbobbing 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 bobbing

StepLanguageWordMeaning
1Englishbobbingpresent participle of bob; The motion of...
2EnglishbobTo move gently and vertically, in either a single...
3Middle Englishbobbento strike, to shake; to strike, beat, shake, jog
Every word from Proto-Indo-European -ḱos