B1 to say or think that someone or something did something wrong or is responsible for something bad happening: Don't blame me (= it is not my fault) if you miss the bus! Hugh blames his mother for his lack of confidence. Hugh blames his lack of confidence on his mother. You can't really blame Helen for not wanting to get involved.Blaming and accusing I don't blame sb C2 said in order to tell someone that you understand why they are doing something and that you agree with their reason for doing it: I don't blame him for getting angry - she's behaving dreadfully. 'I decided to leave.' 'I don't blame you!'Blaming and accusing be to blame C1 to be the reason for something that happens: The hot weather is partly to blame for the water shortage.Being based on or depending on something