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Synonyms

lifeblood

American  
[lahyf-bluhd] / ˈlaɪfˌblʌd /

noun

  1. the blood, considered as essential to maintain life.

    to spill one's lifeblood in war.

  2. a life-giving, vital, or animating element.

    Agriculture is the lifeblood of the country.


lifeblood British  
/ ˈlaɪfˌblʌd /

noun

  1. the blood, considered as vital to sustain life

  2. the essential or animating force

"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

Etymology

Origin of lifeblood

First recorded in 1580–90; life + blood

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Logistics is the lifeblood of the economy—and J.B.

From Barron's • Apr. 15, 2026

“Investors are going to be focused on that metric and trends there, given engagement is really the lifeblood of the company and really what fuels the long-term revenue and earnings growth.”

From MarketWatch • Apr. 15, 2026

Oil is the lifeblood of the Russian economy.

From The Wall Street Journal • Mar. 10, 2026

"Football was his lifeblood," said Jordan, noting that after the Bradford fire, Yorath attended the funerals of all those who died.

From BBC • Jan. 26, 2026

For many lads, it’s their lifeblood, and it shouldn’t be restricted, withdrawn, or used manipulatively except under the most serious circumstances.

From "Geeks: How Two Lost Boys Rode the Internet Out of Idaho" by Jon Katz