What does itemize mean?
Itemize means to present something as a list of separate parts, entries, or charges. It is especially common in formal and business contexts involving bills, budgets, proposals, reports, and applications. A request to itemize expenses, for example, asks for each cost to be stated separately rather than giving only a total. The verb therefore implies greater detail, precision, and accountability. It can also be used more broadly when a person or document is asked to identify the specific elements of a claim, plan, or request. “Itemize” is standard in American English, while British English usually spells it “itemise.” Although “list” can perform a similar function in less formal contexts, itemize is especially appropriate when a careful or complete breakdown is required.
verbTo list or enumerate things separately, especially to provide a detailed breakdown of costs, expenses, or components.
- To list individual items or components separately, especially in a financial account or formal report.
"The report itemizes the project’s expenses so that each expense can be reviewed independently."
"The invoice itemizes each charge, including installation, shipping, and taxes."
"Lawmakers asked the agency to itemize the proposal and identify the cost of each provision."
Itemize turns a general expense into a list of specifics, making hidden details much easier to examine.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does itemize come from?
The word was formed in English by adding the suffix “-ize” to “item,” with the result meaning “to set out as items.” “Item” comes from Latin, where it referred broadly to a piece, portion, or separate detail. The British spelling “itemise” reflects the traditional British preference for forms such as organise and realise.
Related word forms
How itemize is actually used
The word is most common in formal, business, legal, and administrative contexts. The spelling “itemise” is standard in British English, while “itemize” is standard in American English.
Easily confused with itemize
The British spelling is “itemise,” while the American spelling is “itemize.”