What does categorised mean?
Categorised is the past tense and past participle of the verb categorise, meaning to sort people, objects, information, or ideas into distinct groups based on shared characteristics. The word follows British spelling conventions, while American English prefers the variant categorized. In practice, categorised typically appears in passive constructions — data is categorised, specimens are categorised, expenses are categorised — because the emphasis falls on the system doing the sorting rather than the sorter. It carries a formal, methodical tone suited to academic papers, administrative reports, scientific writing, and technical documentation. The underlying noun, category, traces back through Latin categoria to Greek kategoria, Aristotle's term for a fundamental class of being. To describe something as categorised implies order has been imposed: items once jumbled together now occupy clearly defined places within a scheme. Its opposite would be unsorted or disorganised material.
verb (past tense and past participle)The past tense and past participle of categorise (chiefly British spelling of categorize): to arrange or classify things into categories according to shared characteristics.
- Arranged or sorted into distinct classes or groups according to shared characteristics (past tense/participle of categorise).
"The specimens were categorised by size before being sent to the laboratory."
"All incoming mail was categorised by priority within an hour of arrival."
"The library's rare books are categorised by century and country of origin."
Every time you say "categorise", you're borrowing a word Aristotle built his whole system of knowledge on — from Greek kategoria, literally "speaking against" in public accusation.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of categorised
Categorised derives from categorise, formed from the noun category plus the verb-forming suffix -ise. Category comes from Latin categoria, borrowed from Greek kategoria, meaning "assertion" or "accusation", derived from katēgorein ("to speak against, accuse publicly") — a compound of kata ("against") and agoreuein ("to speak in the assembly"). Aristotle used kategoriai for his ten fundamental classes of predication, giving the word its enduring sense of a basic class or division. The verb categorise emerged much later, in modern English, alongside its American counterpart categorize.
How categorised is actually used
Chiefly British spelling; American English writes it "categorized". As a verb form it appears most often in passive constructions describing systematic sorting of data, specimens, documents, or people. The verb carries a neutral-to-formal register, common in academic, administrative, and scientific writing.
Easily confused with categorised
"Categorised" uses the British -ise spelling while "categorized" is the American spelling; both mean exactly the same thing.