A BLUNDER is an embarrassing mistake or misjudgment. It can be used to describe a wide range of errors, from minor slips of the tongue to major miscalculations. The term 'a BLUNDER' can be broken down into five different crossword solutions: GAFFE (5 letters), ERROR (5 letters), FLUB (4 letters), ERR (3 letters), and GOOF (4 letters). GAFFE is a French word meaning 'BLUNDER' or 'faux pas'. ERROR is a noun that means 'a mistake or inaccuracy'. FLUB is a slang term for a mistake or BLUNDER. ERR is a verb meaning 'to make a mistake'. GOOF is another slang term for a mistake or BLUNDER.