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1. To fall from something in small bits or pieces. Ugh, look at all the glitter that flaked off my birthday cards.
2. slang To ignore a planned event or responsibility, often to do something frivolous instead. I flaked off class this afternoon and went to the mall instead.
flake off (of) something
[for bits of something] to break away from the whole, perhaps under pressure or because of damage. (Of is usually retained before pronouns.) Little bits of marble began to flake off the marble steps. Bits flaked off from the whole.
1. To break away from a surface in small, flat pieces: Rust is flaking off of the old pipes. Paint chips are flaking off from the ceiling.
2. Slang To fail to do something out of lack of interest; blow something off: Last night I flaked off doing the dishes because I was tired.