Where does “stopwatch” come from?

Stopwatch combines English stop and English watch, with stop deriving from Old English stoppian, from Proto-Germanic stuppōną, ultimately tracing to Proto-Indo-European stemb-.

stopwatch (English): A timepiece designed to measure the amount of...

Definitions

  1. A timepiece designed to measure the amount of...

Ancestry of “stopwatch”, step by step

stopwatch traces back through two separate lines of ancestry.

via English watch

StepLanguageWordMeaning
1EnglishwatchA portable or wearable timepiece; The act of...
2EnglishpuppyA young dog, especially before sexual maturity; A...
3EnglishpuppieObsolete form of puppy
4Middle Frenchpoupéedoll, toy
5Old Frenchpoupée
6Latinpupagirl, little girl; doll, puppet; pupa
7Latinpupusa boy, a child; a puppet; the pupil of the eye
8Proto-Indo-Europeanpeh₂w-few, little; smallness

via English stop

StepLanguageWordMeaning
1EnglishstopTo cease moving; To not continue; To cause to...
2EnglishtopThe highest or uppermost part of something; A...
3Middle EnglishtopThe summit or top of something, especially a...
4Old Englishtopptop, summit (of something)
5Proto-West Germanic*topptop, summit, crest
6Proto-Germanictuppaztuft, plait; top, summit
7Proto-Indo-Europeandumb-tail, rod, staff, pole, penis; tail, rod, staff,...

Words derived from “stopwatch

Every word from Proto-Indo-European peh₂w-
stopwatch — Etymology, Origin & Word History | Etymology Explorer