1 definition by jorgeevadestaxes

The onosecond is the moment where you have made a horrendous mistake, but it's just too late to intervene.

The onosecond is named "onosecond" because it refers to itself, that second that makes you say: "Oh, no."
Person 1: "Did you remember to turn off the oven before you left the house?"

Person 2: "Oh, no."

Person 1: "That's an onosecond right there."
by jorgeevadestaxes May 29, 2022
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