Etymology
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unmatched (adj.)
1580s, "unrivaled," from un- (1) "not" + past participle of match (v.).
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unrivalled (adj.)
also unrivaled, 1590s, from un- (1) "not" + past participle of rival (v.).
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nonsuch (n.)

1580s, nonesuch "unmatched or unrivaled thing," from none + such. From 1640s as "person who has no equal." As a type of decorated 16c. or 17c. chest, it is in reference to Nonesuch Palace, in Surrey, which supposedly is represented in the designs. Middle English had an adjective non-swich "no such, not any such" (mid-13c.), also used as a surname and as a pronoun (c. 1300) meaning "no such person or thing."

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