What the heck was that vs What the hell was that

When to use each in English, with meaning, register, and examples.

What the heck was that

InformalBeyond 10,000 (less common)

What the hell was that

InformalTop 1,000 (very common)
Most common: What the hell was that
 What the heck was thatWhat the hell was that
Pronunciation🇬🇧 //wɒt ðə hɛk wəz ðæt//🇺🇸 //wɑt ðə hɛk wəz ðæt//🇬🇧 //wɒt ðə hɛl wəz ðæt//🇺🇸 //wɑt ðə hɛl wəz ðæt//
MeaningAn expression of surprise or confusion.A strong expression of surprise or confusion.
ExampleWhen the lights flickered, I yelled, 'What the heck was that?!'When I heard the loud crash, I shouted, 'What the hell was that?!'
RegisterInformalInformal
How commonBeyond 10,000 (less common)Top 1,000 (very common)
CollocationsWhat the heck happened, What the heck is going on, What the heck did you sayshout what the hell, ask what the hell, respond with what the hell
Common mistakesUsed in very formal situations where a more polite phrase is needed., Confused with 'What the hell was that?' which is stronger and more vulgar.Used in formal situations where a more polite phrase is needed., Confused with 'What the heck?' which is milder., Misused as a question rather than an expression of emotion.
Usage notesUse this phrase to express disbelief or confusion in casual conversations. It's typically not used in formal settings.Use this phrase to express shock or disbelief. It's informal and may be considered rude or inappropriate in formal settings.

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What the heck was that
What the hell was that

Frequently asked questions: What the heck was that vs What the hell was that

What's the difference between What the heck was that and What the hell was that?

What the heck was that: An expression of surprise or confusion. What the hell was that: A strong expression of surprise or confusion.

Which is more common: What the heck was that and What the hell was that?

What the hell was that is the most common in everyday English.

Can you show an example of each?

What the heck was that: When the lights flickered, I yelled, 'What the heck was that?!' What the hell was that: When I heard the loud crash, I shouted, 'What the hell was that?!'

Can I use What the heck was that and What the hell was that interchangeably?

Not always. What the heck was that and What the hell was that are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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