Mismatched vs. Mixmatch: What's the Difference?

Mismatched and Mixmatch Definitions
Mismatched
Simple past tense and past participle of mismatch
Mixmatch
(nonstandard) Mismatch.
Mismatched
Unsuitably matched; ill joined.
Mixmatch
(nonstandard) Mismatch.
Mismatched
Matched unsuitably; grouped into pairs or sets with incompatible characteristics.
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Mismatched
Of very unequal ability; - of contestants in a contest. The less able contestant is said to be overmatched or outclassed.
Mismatched
Either not matched or unsuitably matched
Mismatched
(of a contest or contestants) not fairly matched as opponents;
Vaudeville...waged an uneven battle against the church