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whereby

[ wair-bahy, hwair- ]
/ wɛərˈbaɪ, ʰwɛər- /
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conjunction, adverb
by what or by which; under the terms of which.
Obsolete. by what? how?
QUIZ
SHALL WE PLAY A "SHALL" VS. "SHOULD" CHALLENGE?
Should you take this quiz on “shall” versus “should”? It should prove to be a quick challenge!
Question 1 of 6
Which form is used to state an obligation or duty someone has?

Origin of whereby

First recorded in 1150–1200, whereby is from the Middle English word wherby.See where, by
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use whereby in a sentence

British Dictionary definitions for whereby

whereby
/ (wɛəˈbaɪ) /

pronoun
by or because of whichthe means whereby he took his life
adverb
archaic how? by what means?whereby does he recognize me?
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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