Meanings
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1
adj
covered or stained with ingrained dirt, grease, or soot
He wiped the grimy workshop window with an old cloth.
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2
adj
morally disreputable, corrupt, or sordid; informal
The investigation exposed the grimy side of local politics.
Thesaurus
Etymology
Formed from grime + -y. The physical sense means stained with accumulated dirt or soot; the informal moral sense extends that dirtiness to corrupt or disreputable conduct.