flake
The word evokes a sense of fragility and fragmentation, whether describing physical matter like dried paint or frozen water crystals. It suggests a process of shedding or breaking away from a cohesive whole into thin, lightweight layers. In a social context, the term carries a strong negative connotation of instability. Calling someone a flake implies a lack of integrity or reliability, shifting the meaning from a physical fragment to a metaphorical lack of solidity in character.
Meanings
A small, flat, thin piece of something broken or separated from a larger mass.
"A flake of skin peeled off the arm."
A person who is unreliable or fails to keep appointments and promises.
"I thought he was coming to the party, but he turned out to be a total flake."
To break or peel off into small, flat pieces.
"The old paint began to flake from the walls."