What does flaking mean?
Flaking is the process by which a material breaks away from a surface in small, thin, flat pieces. It most often describes deteriorating paint, rusting metal, dry skin, weathering stone, or delicate pastry separating into layers. As a verb form, it typically appears with an adverbial particle such as "off" or "away" — paint flaking off a wall, rust flaking from an old gate — and it can describe either the substance doing the coming-off or someone's act of removing pieces. Informally, particularly in North America, "flaking out" has a second life meaning to cancel plans or fail to follow through, which has given English the characteristically unreliable "flake." Literally, flaking signals decay or dryness and usually carries negative connotations when applied to buildings or skin, yet it is positively essential in baking, where flaky pastry is prized. Its dual existence — physical shedding and social letdown — makes it a small but versatile piece of the language.
To come off, or to remove something, in small thin flat pieces; commonly used of paint, rust, skin, stone, and pastry.
"The varnish on the deck was flaking badly after the summer sun."
Usually paired with "off," "away," or "from" when describing what sheds.
The action or process of breaking off in small flat pieces.
"Inspectors noted extensive flaking of the concrete bridge supports."
As a noun it appears mostly in technical, industrial, or medical descriptions of deterioration.
That powdery residue on your shoulder isn't just dandruff's fault — paint, skin, stone, and even croissant layers all share one word for letting go in little pieces: flaking.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of flaking
The word derives from "flake," which entered English by the late fourteenth century, probably from Old Norse "flak," meaning a flat layer or fissured mass, reflecting Scandinavian influence on English vocabulary during the Viking era. Some sources connect it instead to related Germanic forms meaning loose fragments. Over time the noun broadened from sheets of stone or flesh to any thin fragment, and the verb followed naturally; the modern informal sense of a person who "flakes out" emerged much later, in twentieth-century American slang.
Related word forms
How flaking is actually used
The literal sense (surfaces shedding small pieces) is neutral and common in both formal and everyday contexts. The colloquial sense — describing someone who cancels plans unreliably — is informal and largely North American; it carries a mildly disapproving connotation, and the person so described may be called "flaky."
Easily confused with flaking
"Flack" (also spelled "flak") refers to harsh criticism or a publicity agent, while "flaking" describes material coming off in small thin pieces.