Exhaust vs Fatigue

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

Exhaust

Top 5,000 (fairly common)C1noun

Fatigue

Top 2,000 (common)
Most common: Fatigue
 ExhaustFatigue
Pronunciation🇬🇧 //ɪɡˈzɔːst//🇺🇸 //ɪɡˈzɔst//🇬🇧 //fəˈtiːɡ//🇺🇸 //fəˈtiɡ//
MeaningThe state of being very tired or worn out.A feeling of being very tired or weak.
ExampleAfter the marathon, I felt complete exhaust and could barely stand.After the long hike, I was overcome with fatigue.
RegisterNeutralNeutral
How commonTop 5,000 (fairly common)Top 2,000 (common)
CEFR levelC1-
Part of speechnoun
Collocationsmental exhaust, total exhaust, extreme exhaustmental fatigue, physical fatigue, chronic fatigue, combat fatigue, fatigue symptoms
Antonymsenergy, vitality, refreshmentenergy, vitality, invigoration
Common mistakesConfused with 'exhaustion', using it in non-physical contexts., Using it as a verb instead of a noun., Overusing in informal situations like casual conversation about being tired.Confused with 'tiredness' - fatigue is a stronger, more serious feeling., Incorrectly used as a verb; fatigue is a noun., Misunderstood its severity; fatigue often implies a more chronic condition.
Usage notesCommonly used in both formal and informal contexts. Not typically used when referring to casual tiredness; better for extreme fatigue.Used in both formal and informal contexts to describe tiredness; often used in medical situations or about work-related tiredness. Not typically used in casual conversation.

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Exhaust
Fatigue

Frequently asked questions: Exhaust vs Fatigue

What's the difference between Exhaust and Fatigue?

Exhaust: The state of being very tired or worn out. Fatigue: A feeling of being very tired or weak.

Which is more common: Exhaust and Fatigue?

Fatigue is the most common in everyday English.

Can you show an example of each?

Exhaust: After the marathon, I felt complete exhaust and could barely stand. Fatigue: After the long hike, I was overcome with fatigue.

Can I use Exhaust and Fatigue interchangeably?

Not always. Exhaust and Fatigue 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.