I feel thin vs Lean

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

I feel thin

InformalBeyond 10,000 (less common)

Lean

Top 1,000 (very common)B2verb
Most formal: LeanMost common: Lean
 I feel thinLean
Pronunciation🇬🇧 //aɪ fiːl θɪn//🇺🇸 //aɪ fiːl θɪn//🇬🇧 /["/liːn/","/liːnz/","/liːnd/","/lent/","/ˈliːnɪŋ/"]/🇺🇸 /["/liːn/","/liːnz/","/liːnd/","/lent/","/ˈliːnɪŋ/"]/
MeaningI feel slim or not heavy.To bend or tilt to one side.
ExampleAfter the diet, I feel thin and energetic.She decided to lean against the wall while waiting for her friends.
RegisterInformalNeutral
How commonBeyond 10,000 (less common)Top 1,000 (very common)
CEFR level-B2
Part of speechverb
Collocationsfeel thin, look thin, seem thinheavily, across, against, from, heavily, across, against, from, heavily, across, against, from
Antonymsfat, overweight, heavystraighten, stand upright
Common mistakes'Thin' confused with 'fit' or 'skinny', Using in formal contexts like professional settings, 'Feeling thin' mistaken for 'being thin' physically'Leaning' confused with 'leaning on' a person instead of an object., Using 'lean' as a noun instead of a verb., Mixing up 'lean' with 'lend' in context.
Usage notesUse 'I feel thin' in casual conversations about weight or body image. It’s generally informal and may be understood differently based on context.Use 'lean' when describing physical positioning or support. Avoid using it in formal writing where more precise language is needed.

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I feel thin

Frequently asked questions: I feel thin vs Lean

What's the difference between I feel thin and Lean?

I feel thin: I feel slim or not heavy. Lean: To bend or tilt to one side.

Which is more formal: I feel thin and Lean?

Lean is the most formal of these.

Which is more common: I feel thin and Lean?

Lean is the most common in everyday English.

Can you show an example of each?

I feel thin: After the diet, I feel thin and energetic. Lean: She decided to lean against the wall while waiting for her friends.

Can I use I feel thin and Lean interchangeably?

Not always. I feel thin and Lean 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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