You couldn't Meaning in English
expression · lemma: can
Definition
'You couldn't' is the negative past form of 'can,' meaning someone wasn't able to do something. It is also used to politely suggest that something is impossible or not allowed.
Usage & Nuances
Common in past-tense negatives and polite refusals. It can express inability ('You couldn't lift it') or suggestion ('You couldn't possibly mean that'). Don't confuse with 'you can't' (present). Often softened for politeness.
Example Sentences
You couldn't find your keys this morning.
basic
You couldn't open the door because it was locked.
basic
You couldn't go to the party last weekend.
basic
You couldn't possibly think that's a good idea.
natural
I was so tired, you couldn't blame me for falling asleep.
natural
There was so much noise that you couldn't hear yourself think.
natural