Duh

Part of speech: interjection, adverb

Definitions

  1. An informal exclamation used to indicate that something is obvious or should be easily understood; a sarcastic remark implying that someone has stated something trivial or foolish; a vocalization expressing dismissive or mocking disbelief
  2. A slang interjection employed to highlight the obviousness of a statement; a way to mock or criticize perceived ignorance or lack of intelligence; a sound uttered to convey impatience with a foolish comment
  3. A common informal expression used to signify that information is evident and needs no explanation; a humorous or sarcastic response to a silly or redundant remark; a verbal cue signaling that a point is considered self-evident or not worthy of discussion

Etymology: The interjection expressing obviousness or a sarcastic response to a perceived foolish statement emerged in American English during the mid-20th century. It is believed to have originated as a vocalization mimicking a slow or dim-witted sound, essentially an onomatopoeic representation of a blank or dumb reaction. This kind of utterance has been common in informal speech to convey a sense of "obviously" or "no kidding," often with a humorous or mocking tone. The spelling with "duh" appears to have been standardized in print by the 1960s, gaining popularity through its frequent use in comedy, television, and everyday slang. Its usage aligns with a broader trend in English of adopting simple, non-lexical sounds as interjections to express attitudes or reactions. Unlike words with clear etymological roots from Latin or Germanic origins, this term is more of a vocal gesture captured in writing. Although it is primarily used as an interjection, it can also function adverbially to emphasize the obviousness of a statement. Its informal nature keeps it largely confined to conversational English, often associated with youthful or colloquial speech. The term’s rise reflects how spoken language and social interaction shape new words that convey subtle social cues, such as disbelief or teasing. No historical connection exists between this expression and older English words; rather, it belongs to a class of expressive sounds that have no lexical meaning outside their pragmatic use. It stands as an example of how language evolves to include sounds that capture human emotion and social dynamics with economy and immediacy.

Synonyms: obviously, of course, naturally, clearly, evidently