/ (ˈjʌkəʊ) Australian slang /
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disgusting; unpleasant
an exclamation of disgust
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


What does yucko mean?

Yucko is an informal word you say when you think something is gross or disgusting. It means the same thing as yuck, but it’s even more informal.

Used this way, it’s an interjection, which is a term used to express an emotion or indicate how you feel about something, typically outside of a sentence.

Yucko can also be used as an adjective meaning gross, disgusting, or unappetizing. This sense of the word means the same thing as yucky.

Yucko is primarily used to indicate that you think a food is particularly disgusting or unappetizing. It can be used upon actually tasting something or simply upon looking at it, smelling, or maybe even feeling it—you might say yucko if something feels slimy, for example.

Yucko is also sometimes used to express disgust about other things, such as something filthy or unpleasant weather, as in It’s so hot and sticky outside. Yucko.

Example: Broccoli? Yucko! I’d rather eat peas, which are also yucko!

Where does yucko come from?

Yucko is a variation of yuck. The first written records of the interjection yuck come from around the 1960s, but expressions that sound like it have certainly been used for much longer. Expressive words like yuck (and ew, which is first recorded around the same time) are formed in imitation of the sounds people make in reaction to things. Yuck is thought to have originated in the U.S., at least in print. The suffix -o is used here to make the word more slangy (it’s used the same way in words like neato).

Yucko is most closely associated with yucky foods, but it can be used in all kinds of contexts. You could say yucko when you yourself are feeling sick, as in Yucko, I hate feeling like this. You could say yucko in response to stepping in something gross, or seeing the inside of a filthy dumpster, or smelling someone’s burp (I know—yucko!). Yucko can also be used in other less traditional ways, such as to indicate disgust at the prospect of doing something you don’t want to do, as in I have to spend the whole weekend studying. Yucko. It can also be used in situations in which you encounter something that you want to jokingly say is nauseating, like a public display of affection that’s too public or too affectionate.

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What are some synonyms for yucko?

What are some words that often get used in discussing yucko?



How is yucko used in real life?

Yucko is even more informal than yuck. It’s especially used to express disgust over particular foods.


​Try using yucko!

Is yucko used correctly in the following sentence?

Oh, yucko, this yogurt expired seven years ago.

Yucko is even more informal than yuck. It’s especially used to express disgust over particular foods.