Just came across a function with a typo (this is in TypeScript) - let's call the function slightlyComplicaedName - see the typo? t is missing. Wanted to refactor the function name to fix the typo. Next thing I know, the project doesn't compile anymore. There was already a function called slightlyComplicatedName in that file and it was doing something completely different.

I get that naming is hard, but using typos to differentiate between functions seems too much :)