English Reference

Word

guru

Phoneticsgu·ru

US/ˈɡuˌɹu/

UK/ɡjˈʊɹuː/

Definition

n. someone who knows a lot about a subject and gives advice to others.

n. an influential expert or mentor in a specific field, often used in business or technology contexts.

Examples

“She is a marketing guru who helps small businesses grow.”

“After years of successful investing, he became a financial guru for people looking to retire early.”

“The tech guru's keynote address was met with intense scrutiny by industry analysts who questioned the feasibility of his long-term vision for artificial intelligence.”

Examples

simple

“She is a marketing guru who helps small businesses grow.”

contextual

“After years of successful investing, he became a financial guru for people looking to retire early.”

complex

“The tech guru's keynote address was met with intense scrutiny by industry analysts who questioned the feasibility of his long-term vision for artificial intelligence.”

Usage

Often used with a noun modifier to specify the field of expertise.

Teaching tip

While common in business, using this for any expert can sometimes sound slightly humorous or informal.

Real-World Examples

“Meghan recently got into a dust-up with lifestyle guru Martha Stewart.”
Toronto Sun · 21 Aug 2026
“He has also brought in Austin MacPhee, Aston Villa’s set-piece guru.”
The Guardian · 12 Aug 2026

Etymology

Borrowed from Hindi गुरु (guru) / Punjabi ਗੁਰੂ (gurū), from Sanskrit गुरु (guru, “venerable, respectable”), originally "heavy" and in this sense cognate to English grieve and, more distantly, brute. Doublet of grave. A traditional, though flawed etymology based on the Advayataraka Upanishad (line 16) describes the syllables gu as “darkness” and ru as “destroyer”, thus ascribing the meaning of “one who destroys/dispels darkness” to the word.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Synonyms

Antonyms

This entry

Level
B2 · Upper Intermediate
Frequency
Frequent
Updated
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Informal

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