Goof

Goof is an informal English term with several related senses, functioning as both a noun and a verb. As a noun, a goof can refer to a silly or clumsy person, often used affectionately in casual speech. It can also denote a blunder or error, especially one that is humorous or minor. As a verb, goof means to act in a silly or careless way, to make a mistake, or to waste time; phrases include goof off (to avoid work) and goof around (to idle or fool around). The related noun goof-up names a more conspicuous error or mishap.

The word’s origin traces to American slang in the early 20th century; the exact roots are unclear, but it is likely linked to expressions for foolish behavior and to the sense of fooling around. It has since become widespread in informal speech and writing.

In usage, goof is typically informal and may convey lightheartedness or mild criticism depending on context. For example, “He’s a goof” can be affectionate or teasing, while “What a goof” expresses amusement at a mistake. The term also leads to compounds such as goof-up and goof-off, which denote a significant mistake or a person who shirks work, respectively.

In film and television, goofs or goof-ups describe errors or bloopers captured in production or released in compilations, illustrating how the term can refer to mistakes beyond a person’s character.

Notes: Do not confuse with the Disney character Goofy, a distinct proper noun with a widely recognized spelling. Some casual references may use “goof” when alluding to the character, but the standard spelling for the character is Goofy.