The Norwegian word "feil" means "mistake" in English. Some synonyms for "feil" are "tabbe," "glipp," and "takk." "Tabbe" describes a silly or careless mistake, while "glipp" refers to a small mistake or oversight. "Takk" is used as a synonym for "feil" when referring to a technical error or malfunction. Another synonym for "feil" is "feiltak," which is commonly used when describing a misstep or blunder. Overall, there are several different words that can be used as alternatives to "feil" in various contexts, allowing speakers to vary their language and express ideas with precision and accuracy.