To remove the luster or shine from something; to make something dull or tarnished.
From dis- (prefix meaning 'reverse' or 'deprive of') + luster (from Latin lustrum, meaning 'to brighten' or 'polish'). This is a rare, archaic term formed in early Modern English to describe the opposite of polishing.
This word is a linguistic mirror: 'luster' means shine and polish, so 'disluster' means the opposite, showing how the dis- prefix lets English speakers instantly create antonyms—a word that probably existed in someone's diary but never caught on.
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