A person or thing that causes disorder or confusion by disturbing the arrangement of something.
From dis- (prefix meaning to undo) + arranger (from arrange, from Old French aranger). The prefix dis- negates or reverses the action of arranging, creating the sense of undoing orderly arrangement.
The prefix 'dis-' is one of English's most powerful tools for negation—it's used in thousands of words, but each one creates a subtle different meaning. 'Disarranger' suggests not just disorder, but the active agent causing it, which is why we don't often use it for inanimate objects.
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