Where does “weight” come from?

weight (Middle English) comes from Old English wiht, from Latin Vectis, from Proto-Celtic wextā, from Proto-Indo-European weǵʰ- — to bring; to transport.

Ancestry of “weight”, step by step

Step	Language	Word	Meaning
1	Old English	wiht	creature, person, thing, being; weight
2	Latin	Vectis	Isle of Wight
3	Proto-Celtic	wextā	time, course, turn
4	Proto-Indo-European	weǵʰ-	to bring; to transport

Words derived from “weight”

weight
overweight
lightweight
heavyweight
counterweight
underweight
weightless
hundredweight
birthweight
weightlessness
weightlifting
paperweight
bodyweight
middleweight
featherweight
welterweight
weightlifter
pennyweight
makeweight
weightlessly
bantamweight
flyweight
cruiserweight
biweight

Every word from Proto-Indo-European weǵʰ- →

weight — Etymology, Origin & Word History | Etymology Explorer