Let alone
conjunction
Used to emphasize that something is more unlikely or impossible when something less likely has already been mentioned.
I can't afford a vacation, let alone a trip around the world.

Often appears as...
- can't afford...let alone
- can't manage...let alone
Usage tips
Idiomatic
conjunction
Used to suggest that something is unlikely because something less extreme is already deemed impossible or unlikely.
They don't even know my name, let alone any personal details about me.

Often appears as...
- don't even know...let alone
- can't even understand...let alone
Usage tips
Idiomatic
conjunction
Used to emphasize that something is more unlikely or impossible when something less likely has already been mentioned.
I can't afford a vacation, let alone a trip around the world.

Often appears as...
- can't afford...let alone
- can't manage...let alone
Usage tips
Idiomatic
conjunction
Used to suggest that something is unlikely because something less extreme is already deemed impossible or unlikely.
They don't even know my name, let alone any personal details about me.

Often appears as...
- don't even know...let alone
- can't even understand...let alone
Usage tips
Idiomatic
Definition 1 of 2

Increasing Improbability
Use 'let alone' to highlight a progression from something improbable to even more so.

He's not ready to run a 5k, let alone a marathon.
Contrast Stressed
'Let alone' emphasizes contrast, not a comparison for similarities.

She won't eat vegetables, let alone try exotic foods.
Stark Contrast
The phrase often points to extreme differences between two elements.

They struggle to boil water, let alone cook a three-course meal.
Increasing Improbability
Use 'let alone' to highlight a progression from something improbable to even more so.

He's not ready to run a 5k, let alone a marathon.
Contrast Stressed
'Let alone' emphasizes contrast, not a comparison for similarities.

She won't eat vegetables, let alone try exotic foods.
Stark Contrast
The phrase often points to extreme differences between two elements.

They struggle to boil water, let alone cook a three-course meal.
Increasing Improbability
Use 'let alone' to highlight a progression from something improbable to even more so.

He's not ready to run a 5k, let alone a marathon.
Contrast Stressed
'Let alone' emphasizes contrast, not a comparison for similarities.

She won't eat vegetables, let alone try exotic foods.
Stark Contrast
The phrase often points to extreme differences between two elements.

They struggle to boil water, let alone cook a three-course meal.
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