lifeblood
C1Formal, figurative
Definition
Meaning
A thing that is absolutely essential to the existence, survival, or proper functioning of something else; the vital source or element.
Often refers to a crucial resource, such as money, trade, water, or ideas, without which a system, organization, or community would weaken or perish. Used metaphorically.
Linguistics
Semantic Notes
This is a singular, non-count noun. It is almost exclusively used metaphorically to emphasize critical importance. 'The lifeblood of X' is a very common phrase.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or usage. Both use the compound spelling 'lifeblood'.
Connotations
Identical in both variants; conveys a sense of critical, vital necessity.
Frequency
Comparable frequency in both British and American English, appearing in formal and journalistic contexts.
Vocabulary
Collocations
Grammar
Valency Patterns
[NP] + is/are + the lifeblood + of + [NP]The lifeblood + of + [NP] + is/are + [NP]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “Suck the lifeblood out of something (to drain its essential resources)”
Usage
Context Usage
Business
Tourism is the lifeblood of the coastal towns.
Academic
Critical thinking is the lifeblood of a robust intellectual community.
Everyday
For many teenagers, their social connections are their lifeblood.
Technical
In ecology, pollinators are the lifeblood of many terrestrial ecosystems.
Examples
By CEFR Level
- Water is the lifeblood of the garden.
- Small businesses are the lifeblood of our local economy.
Learning
Memory Aids
Mnemonic
Think of a 'blood transfusion' for a patient. 'Lifeblood' is the metaphorical transfusion that keeps a system alive and healthy.
Conceptual Metaphor
ESSENTIAL RESOURCE IS BLOOD (e.g., 'cash flow is the blood of a business'; 'information is the lifeblood of democracy').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid a literal translation like 'жизненная кровь' in most contexts; it sounds overly dramatic or medical. Use 'основа', 'главный источник жизни', 'душа' (e.g., 'душа бизнеса') depending on context.
- Do not confuse with 'lifeline' (спасательный круг), which is a means of rescue, not a sustaining resource.
Common Mistakes
- Using it as a countable noun (e.g., 'two lifebloods'). It is uncountable.
- Using it in a literal, medical sense (this is extremely rare).
Practice
Quiz
In which of the following sentences is 'lifeblood' used CORRECTLY?
FAQ
Frequently Asked Questions
No, 'lifeblood' is an uncountable noun. You should say 'the lifeblood' or use it without an article (e.g., 'It provides lifeblood to the region').
Yes, it is used in formal, journalistic, and academic contexts. It is a strong, metaphorical term and would sound odd in very casual conversation about trivial matters.
'Lifeblood' emphasizes a vital, sustaining resource (like blood for the body). 'Backbone' emphasizes structural support and strength (like a spine). A company's R&D department might be its lifeblood (source of new ideas), while its skilled workforce is its backbone (providing strength and stability).
Almost never in modern English. Its literal meaning ('blood necessary for life') is archaic. Today it is exclusively a metaphor. Use 'blood' for the literal meaning.