Let's assume I am interested vs Suppose

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

Let's assume I am interested

Top 3,000 (common)

Suppose

Top 1,000 (very common)A2verb
Most common: Suppose
 Let's assume I am interestedSuppose
Pronunciation🇬🇧 //lɛts əˈsjuːm aɪ æm ˈɪntrəstɪd//🇺🇸 //lɛts əˈsum aɪ ˈɪntrəstɪd//🇬🇧 /["/səˈpəʊz/","/səˈpəʊzɪz/","/səˈpəʊzd/","/səˈpəʊzɪŋ/"]/🇺🇸 /["/səˈpəʊz/","/səˈpəʊzɪz/","/səˈpəʊzd/","/səˈpəʊzɪŋ/"]/
MeaningLet's say I want to know more.to think something is true, especially for planning.
ExampleLet's assume I am interested in the project details.Suppose we leave early, we might avoid traffic.
RegisterNeutralNeutral
How commonTop 3,000 (common)Top 1,000 (very common)
CEFR level-A2
Part of speechverb
Collocationsassume responsibility, assume control, assume a position, assume a role, assume the worstmistakenly, wrongly, commonly, be plausible to, be reasonable to, be absurd to, reason to suppose something
Antonyms-disbelieve, doubt, reject
Common mistakesConfused with 'Let's presume' - both mean similar, but 'presume' may sound more formal., Using 'let's' when writing formally can seem too casual., Omitting 'I' can make the sentence incomplete.Confused 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.
Usage notesUsed in discussions to propose a hypothetical situation. It's suitable for formal and informal contexts.Typically used in situations where you're making assumptions or predictions. It's less appropriate in formal writing. In casual talks, it can indicate uncertainty.

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Let's assume I am interested
Suppose

Frequently asked questions: Let's assume I am interested vs Suppose

What's the difference between Let's assume I am interested and Suppose?

Let's assume I am interested: Let's say I want to know more. Suppose: to think something is true, especially for planning.

Which is more common: Let's assume I am interested and Suppose?

Suppose is the most common in everyday English.

Can you show an example of each?

Let's assume I am interested: Let's assume I am interested in the project details. Suppose: Suppose we leave early, we might avoid traffic.

Can I use Let's assume I am interested and Suppose interchangeably?

Not always. Let's assume I am interested and Suppose 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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