doh

/dəʊ/

IPA: /D OW1/

interjection
  1. 1

    Expresses frustration or anger, especially at one’s own stupidity.

    —I just paid for our food. –You didn't have to. It's free. –D'oh!

noun
  1. 1

    An anglicised spelling of do. A syllable used in solfège to represent the first and eighth tonic of a major scale.

Synonyms

Source: https://en.wiktionary.org/wiki/d'oh, https://en.wiktionary.org/wiki/doh