Suppose vs What if __ told someone

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

Suppose

Top 1,000 (very common)A2verb

What if __ told someone

Top 5,000 (fairly common)
Most common: Suppose
 SupposeWhat if __ told someone
Pronunciation🇬🇧 /["/səˈpəʊz/","/səˈpəʊzɪz/","/səˈpəʊzd/","/səˈpəʊzɪŋ/"]/🇺🇸 /["/səˈpəʊz/","/səˈpəʊzɪz/","/səˈpəʊzd/","/səˈpəʊzɪŋ/"]/🇬🇧 //wɒt ɪf//🇺🇸 //wɑt ɪf//
Meaningto think something is true, especially for planning.What happens if someone informs another person?
ExampleSuppose we leave early, we might avoid traffic.What if someone told you the secret to happiness?
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 5,000 (fairly common)
CEFR levelA2-
Part of speechverb
Collocationsmistakenly, wrongly, commonly, be plausible to, be reasonable to, be absurd to, reason to suppose somethingwhat if scenario, what if question, what if situation, what if idea
Antonymsdisbelieve, doubt, reject-
Common mistakesConfused with 'suppose' vs 'supposed' — don't use them interchangeably., Using 'suppose' in a command form improperly., Mistakenly using 'suppose' with a noun instead of a clause.Using 'who' instead of 'someone' in hypothetical phrases., Forgetting to use the past tense for actions not yet taken., Confusing 'what if' with 'if' phrases.
Usage notesTypically used in situations where you're making assumptions or predictions. It's less appropriate in formal writing. In casual talks, it can indicate uncertainty.Commonly used to introduce hypothetical situations or scenarios. Appropriate in both spoken and written English, but avoid in very formal contexts.

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Suppose
What if __ told someone

Frequently asked questions: Suppose vs What if __ told someone

What's the difference between Suppose and What if __ told someone?

Suppose: to think something is true, especially for planning. What if __ told someone: What happens if someone informs another person?

Which is more common: Suppose and What if __ told someone?

Suppose is the most common in everyday English.

Can you show an example of each?

Suppose: Suppose we leave early, we might avoid traffic. What if __ told someone: What if someone told you the secret to happiness?

Can I use Suppose and What if __ told someone interchangeably?

Not always. Suppose and What if __ told someone 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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