Where does “eightysomething” come from?

eightysomething (English) comes from English something, from Middle English somþyng, from Old English sum, from Proto-West Germanic *sum, from Proto-Germanic sumaz, from Proto-Indo-European sem- — together, one.

eightysomething (English): An indeterminate value between 80 (inclusive) and 90 (exclusive)

Definitions

  1. An indeterminate value between 80 (inclusive) and 90 (exclusive)

Ancestry of “eightysomething”, step by step

eightysomething traces back through two separate lines of ancestry.

via English something

StepLanguageWordMeaning
1EnglishsomethingAn uncertain or unspecified thing; one thing; A...
2Middle Englishsomþyngsomething
3Old Englishsumsome
4Proto-West Germanic*sumsome
5Proto-Germanicsumazsome (one), a certain (one)
6Proto-Indo-Europeansem-together, one

via English eighty

StepLanguageWordMeaning
1EnglisheightyThe cardinal number occurring after seventy-nine...
2Middle Englisheightetyeighty
3Old Englishhundeahtatiġeighty
4Proto-Germanicahtōutēhundąeighty
Every word from Proto-Indo-European sem-