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1. Definition + Rich Everyday Explanation
Big cheese (noun, informal) = an important, influential, or powerful person, especially someone in a position of authority.
“Big cheese” is a playful, slightly old-fashioned way to refer to someone who holds power or importance. It’s the boss, the leader, the person who makes decisions and commands respect. When you call someone “the big cheese,” you’re acknowledging their status — but often with a hint of humour, irony, or mild irreverence.
The phrase has a lighthearted feel that makes it different from more serious terms like “CEO” or “director.” You might say “the big cheese” about your manager in a joking way, or use it to gently mock someone who acts self-important. It’s rarely used in formal contexts — you wouldn’t introduce someone at a conference as “the big cheese” — but it’s perfect for casual conversation, workplace banter, and humorous commentary.
The expression can apply to any domain: business, politics, entertainment, social groups, even families. Whoever holds the most power or influence in a particular context can be called the big cheese.
There’s sometimes a subtle edge to it. Calling someone “the big cheese” can imply they think highly of themselves, or that their importance is being gently questioned. It’s affectionate but not entirely respectful — you’re acknowledging their position while keeping things informal.
Examples from the street:
- “I need to get approval from the big cheese before we can move forward” → the most senior person has to agree first
- “He acts like he’s the big cheese around here, but he’s only been here six months” → he behaves as if he’s important, but he hasn’t earned that status
- “So you finally got to meet the big cheese — what’s the CEO actually like?” → you met the top person; what was your impression?
2. Most Common Patterns
- the big cheese → the most important person in a group or organisation
- a big cheese → an important person (one of several, or in general terms)
- act like the big cheese → behave as if you’re the most important person
- meet/speak to the big cheese → have contact with the top person
- the big cheese at/in + place → the leader of a specific organisation or location
- think you’re the big cheese → believe you’re more important than you are
3. Idioms
Note: “Big cheese” is itself an idiom. Here are related expressions:
- big shot → an important or influential person; slightly more common than “big cheese” and can sound more criticalExample: “He’s become a real big shot since he got promoted — barely talks to us anymore.”
- top dog → the most important or powerful person in a group; emphasises dominance and competitionExample: “After years of rivalry, she’s finally the top dog in the department.”
4. Example Sentences
- We can’t make that decision ourselves — we need to ask the big cheese→ Only the most senior person has the authority to approve this.
- He loves being the big cheese at family gatherings — everyone has to listen to his opinions→ He enjoys being the most important person and having everyone pay attention to him.
- She started as an intern and now she’s a big cheese in the fashion industry→ She began at the bottom but became an influential figure in that world.
- Who’s the big cheese around here? I need to speak to someone in charge→ Who’s the person with authority? I need to talk to the leader.
- He acts like the big cheese even though he’s just a team leader→ He behaves as if he’s extremely important despite having a modest position.
- I finally got a meeting with the big cheese — I’m so nervous→ I’m finally meeting the top person and I feel anxious about it.
- Don’t let him intimidate you — he only thinks he’s the big cheese→ Don’t feel threatened; he believes he’s more important than he actually is.
- The big cheese at our company rarely talks to junior staff directly→ The most senior leader seldom communicates with lower-level employees.
- She introduced me to all the big cheeses at the conference→ She helped me meet all the important, influential people at the event.
- Now that you’re the big cheese, don’t forget us little people!→ Now that you’re in charge, remember your old friends who aren’t as powerful.
5. Personal Examples
- Students often want to know how the big cheeses in English media — news anchors, podcast hosts — actually speak→ Learners are curious about how the most prominent figures in English-language broadcasting use the language.
- You don’t need to impress the big cheese with fancy vocabulary — clear communication matters more→ When speaking to important people, being understood is more valuable than using impressive words.
6. Register: Informal / Humorous
✔ Native usage tips
- “Big cheese” sounds slightly dated and playful — younger speakers might use “big shot” or “boss” more often, but everyone understands it
- The phrase is almost always used with humour or gentle irony — it’s not how you’d seriously describe someone important
- Plural is “big cheeses” when referring to multiple important people: “All the big cheeses were at the meeting”
- Often used sarcastically about people who overestimate their own importance: “Oh, look at you, the big cheese!”
- Origin is debated — possibly from “the big thing” (cheese = thing in old slang) or from Persian/Urdu “chiz” meaning “thing”
✔ Similar expressions / words
- Big shot → very similar; perhaps slightly more common and can sound more critical or sarcastic
- Top dog → emphasises being number one in a competitive sense; more about dominance than status
- Bigwig → another playful term for important person; equally informal and slightly old-fashioned
