Definition of thereby
- thereby lost her chance to win
- thereby hangs a tale
- —William Shakespeare
He signed the contract, thereby forfeiting his right to the property.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'thereby.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
: by means of that act, those words, that document, etc.
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