What does chockfull mean?
Chockfull is an informal adjective describing something filled absolutely to capacity — so crammed that nothing more can fit. A train carriage can be chockfull of commuters, a pantry chockfull of preserves, or a speech chockfull of clichés. It almost always appears with the preposition "of," and it is sometimes written as two words ("chock full") without any change in meaning. The word is lively and emphatic, carrying a warm, slightly humorous connotation of abundance rather than mere fullness. Its origins are generally connected to "chock-a-block," an expression associated with sailing ships, where pulley blocks drawn tightly together signified that rigging could be tightened no further. That nautical image of things pressed to their absolute limit survives in the modern sense: if something is chockfull, it is not merely full but packed to bursting. Writers reach for it when they want vividness that plain words like "full" cannot deliver, making it a useful, colorful addition to everyday English.
adjectiveCompletely filled to capacity; crammed full of people or things.
- Filled or crowded to overflowing capacity.
"The market was chockfull of shoppers hunting for last-minute gifts."
"The museum's attic was chockfull of artifacts no one had catalogued in decades."
"Her new novel is chockfull of vivid characters and unexpected twists."
Sailors may be behind this word: it's linked to "chock-a-block," a nautical phrase for pulley blocks jammed so tightly together that nothing can move further.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of chockfull
Chockfull derives from "chock," a word whose origins are uncertain but which is most commonly associated with the nautical phrase "chock-a-block," used by sailors to describe rigging blocks jammed tightly together when hauled fully taut. In Middle English, "chok" also referred to a wooden block or wedge, which supports the idea of solid, immovable fullness. The compound "chockful(l)" has been used in English since at least the early modern period, and it remains firmly established alongside its sibling form "chock-a-block."
How chockfull is actually used
Informal and colloquial in register; common in everyday speech and journalism but rare in formal academic writing. Often written as two words ("chock full") as well as one, and frequently followed by "of." The related form "chock-a-block" carries the same meaning and is especially familiar in British English.
Easily confused with chockfull
"Chalk full" is simply a misspelling — the word is "chock" (as in chock-a-block), not the white mineral chalk.