Unordered

Part of speech: adjective

Definitions

1. Describes a state in which elements are not systematically arranged or organized
2. Characterized by a lack of systematic arrangement or a definite sequence
3. Having elements placed without a predictable or structured pattern

Etymology: "Unordered" is a plain formation: the prefix "un-" attached to "ordered," the past participle of "order." The prefix has a long pedigree, tracing back through Proto-Germanic to a very ancient negating particle shared across the Indo-European languages, and it passed through Old English and Middle English into modern English as a living, freely used prefix. That productivity is why English can attach "un-" to almost any adjective or participle without fuss. "Ordered" itself carries the core sense: something arranged in a sequence or set in a particular pattern. "Unordered" simply reverses that, describing things placed without such a pattern. The word's history is therefore mostly the history of its two parts rather than a story of its own, which is why it has few surprises beyond the long life of the prefix.

Synonyms: chaotic, disorganized, random, messy, confused

Antonyms: ordered, organized, systematic