uh-oh

• uh oh, uhoh
• oh-oh, oh oh
• ruh-roh (humorous)

• (Received Pronunciation) IPA^(key): /ˌʌˈəʊ/, [ˈʔʌ̆ʔ˦əʊ˨]
• (US) IPA^(key): /ˌʌˈoʊ/, [ˈʔʌ̆ʔ˦oʊ˨]

• Audio (Received Pronunciation):

  (file)

• Audio (General American):

  (file)

• Both syllables are initiated with glottal stops, and the high-low intonation of the syllables is distinctive.

uh-oh

1. (informal) An exclamation of error, concern, or awareness of a problem.

   Synonym: (humorous) uh-oh, Spaghetti-O

   Uh-oh! I made a mistake.

   • 2024 August 21, Philip Haigh, “Stranded trains: problems for passengers and operators”, in RAIL, number 1016, page 52:

     Uh-oh. I emerged from the Underground station at London King's Cross the other day to find a dense throng of people filling the main line station's concourse.