凡ぼん失しつぼんしつMeanings1nouncommon mistake; elementary errorRefers to a mistake that is so basic or obvious it should not have been made; often used in self-criticism or when pointing out a careless error.こんな凡ぼん失しつをするなんて、自じ分ぶんが情なさけない。I'm ashamed of myself for making such a basic mistake.
