Grammar fix
a slim chance
small possibility
A very small possibility that something will happen or succeed.
collocation
How oftenCommon
LevelB2
Used inSpeech & writing
Hear it in context
Notice where the phrase sounds natural.
There’s still a slim chance that the weather will improve this afternoon.
There was only a slim chance of finding an affordable flat near my university, so I started looking quite early.
Fix the pattern
One small grammar move makes it sound right.
Not: There is a thin chance that he will come.
Say: There is a slim chance that he will come.
Use 'slim chance' for a very small possibility; 'thin chance' is not the usual collocation.
Don't confuse it
Other ways to say it
Possible, but very unlikely
How formal?ConversationalMore formal
a long shotCasual; often about a plan or guess: 'It's a long shot.'
a slim chanceYou're here · Everyday discussion of a very unlikely outcome.
a remote possibilityA measured description of something extremely unlikely.