Japanese people’s explanations for 「~だってばよ」 (dattebayo) It might be a bit disappointing to learn that だってばよ doesn’t really mean anything in Japanese. If it’s any consolation, judging from the number of questions about it on Japanese-language question and answer websites a lot of Japanese people don’t quite understand the phrase either. Here is a selection of some of the more common, or just interesting, responses to the question of what だってばよ means ... “ Dattebayo ,” which is known as the catchphrase of the main character of the manga “NARUTO,” is translated into English as “Believe it,” but the phrase itself has no particular meaning and is an expression attached to the end of a word. Dattebayo Meaning in English To understand the true meaning of the word, we must start at the basics of the word by breaking it into three parts that it is. Starting the word dattebayo with “Da” is usually used at the end of the sentences. To be precise, it is an informal version of the word “Desu”. ' Dattebayo ' is a unique Japanese phrase that Naruto uses for emphasis, reflecting his personality and resolve. Learn its linguistic breakdown, character-driven reasons, and translation variations in English dubs.