uh-oh
Meaning
used to express mild alarm, concern, or realization of a problem or mistake.
Usage
uh-oh, i think i left the oven on.
she said "uh-oh" when she saw the dark clouds approaching.
uh-oh, that doesn't look right.
Etymology
The word "uh-oh" is a Modern English interjection, emerging in the 20th century. It is a classic example of a reduplicative formation, where the base syllable "uh" (a common hesitation sound) is repeated with a vowel change to "oh" to create a new, expressive unit. This pattern mimics natural vocal reactions to surprise or trouble, making it an onomatopoeic representation of a two-stage emotional response: first noticing ("uh") and then assessing ("oh"). Its adoption into the lexicon demonstrates how spoken filler sounds can conventionalize into a standard word conveying mild alarm or the acknowledgment of a mistake.
Analysis
This is a reduplicative interjection formed by the repetition and variation of the simple exclamation "uh".