duh
1 ENTRIES FOUND:
Britannica Dictionary definition of DUH
US, informal
1
— used in an angry or annoyed way to show that something just said is already known or is obvious
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“It sure is dark out.” “Duh, it's the middle of the night.”
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“You have to turn the key to start the car.” “Well, duh.” [=I know that]
2
— used to show or pretend that you do not know something
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“Why didn't you leave earlier?” “Duh, I don't know.”
