Somewhat brassy or resembling brass; having some qualities of brass but not completely.
From 'brass' + the diminutive suffix -ish, which softens the meaning to indicate something is 'somewhat' or 'rather' brass-like.
The suffix '-ish' is English's way of saying 'kind of' or 'sorta'—something brassish is like calling someone 'boldish,' meaning they're bold but not aggressively so!
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