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Disproportionate (adjective)
Not proportionate.
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Disproportionate (adjective)
Out of proportion.
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Disproportionate (verb)
To undergo disproportionation
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Unproportionate (adjective)
Not proportionate; disproportionate.
Wiktionary
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Unproportionate (adjective)
Not proportionate; poorly proportioned; = “disproportionate”.
Oxford Dictionary