English is not my native language, I started learning it when I was 10. Until high school, I used to believe that there was an English word "ough", which meant insufficient, and "enough" was its negated version.
A childhood belief about foreign languages

others believed things like this
- Because of Pocahontas, I grew up believing Native Americans noises sounded like English to Native Americans.Anon
- I used to believe that the whole world spoke the same language- English.Anon
- I used to believe that english was the only real language and all the others were just made up after.Anon
- I used to believe that "elemeno P" was a certain kind of "P" found only in the English language. Anon
- I used to think that adults spoke an entirely different language (not English) when kids weren't around. — Swordfish
- I used to believe that, no matter what language other people spoke, that everyone thought in EnglishAnon