Circa 1300, in sense “unruly, reckless, violent”, from Old French estourdi, form of estourdir, originally “to daze, to make tipsy (almost drunk)” (Modern French étourdir (“to daze, to make tipsy”)), from Vulgar Latin *exturdire. Latin etymology is unclear – presumably it is ex- + turdus (“thrush (bird)”), but which this should mean “daze” is unclear. A speculative theory is that thrushes eat leftover winery grapes and thus became drunk, but this meets with objections.
Disease in cows and sheep is by extension of sense of “daze”, while sense of “strongly built” is of late 14th century, and relationship to earlier sense is less clear, perhaps from sense of a firm strike (causing a daze) or a strong, violent person.
- of firm build
- solid in structure or person
- It was a sturdy building, able to withstand strong winds and cold weather.
- The dog was sturdy and could work all day without getting tired.