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Definition of lifeblood

lifeblood

/ˈlaɪf.blʌd/
life · blood
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lifeblood Lexical Profile

lifeblood Game Scores & Validity

• noun

1

The indispensable factor or animating force that gives strength, vitality, and continued existence to an institution, system, or enterprise.

Example

"Small businesses and local entrepreneurs are the lifeblood of the regional economy."

2

The blood that is necessary to sustain physical life in a person or animal.

Example

"In ancient folklore, the mythical creature was said to drain the lifeblood of any traveler who crossed its path."

Synonyms
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Antonyms
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• Nearby Words

lieutenant
life
lifebelt
lifeblood
lifeboat
lifebuoy
lifecycle

Word Origin & Etymology

First recorded in the late 16th century, this compound of 'life' and 'blood' reflects the ancient belief that blood is the physical seat of vitality and the soul.

Cite this Entry

Wordmom. (2026). Definition of Lifeblood. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/lifeblood
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