Definition of minish
: to make less (as in size, amount, or degree) : make fewer in number : diminish in power or influence : lessen have minished their numbers — Sir Walter Scott would not … minish by a tittle the respect due to the Magistrate — J. R. Lowell without … muddling it up with myths which simply minish its interest — George Saintsbury
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Origin and Etymology of minish
Middle English menusen, minishen, from Middle French menusier, menuiser to lessen, mince, from (assumed) Vulgar Latin minutiare to mince, from Latin minutia smallness, minuteness, from minutus minute + -ia -y — more at minute
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