Mishmash implies a mix without uniform or orderly structure, often appearing unplanned or random. Her essay was a mishmash of unrelated ideas.
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Informal Usage
Use 'mishmash' in casual conversation or writing, as it has a colloquial tone. The party decor was a cheerful mishmash of colors and patterns.
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Potentially Negative
'Mishmash' can have a negative connotation, suggesting messiness or lack of cohesion. The furniture in the room was a mishmash, giving a cluttered feel.