alone · adjective /əˈloʊn/
alone (WITHOUT PEOPLE)
A2 never before noun without other people
Dictionary examples:
He likes being alone in the house.
She decided to climb the mountain alone.
Do you like living alone?
Learner example:
She doesn't want to go alone. (Key English Test; A2; Portuguese)
leave sb alone
B2 to stop talking to or annoying someone
Dictionary example:
Leave him alone, he's tired.
Learner example:
"Leave me alone, you monster," I said in panic. (First Certificate in English; B2; Portuguese)
let alone
C1 used to emphasize that something is more impossible than another thing
Dictionary example:
You couldn't trust her to look after your dog, let alone your child.
Learner example:
We are surrounded by amazing pieces of technology which we do not fully understand, let alone use to their full capacity. (Certificate in Advanced English; C1; Romanian)
alone (ONLY ONE)
C2 always after noun used to emphasize that only one person or thing is involved
Dictionary examples:
Last year alone the company made a million dollars.
You alone know how you feel.
Learner example:
The decision was hers and hers alone. (Certificate of Proficiency in English; C2; Swedish)
