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Pronunciation varies by accent · noun
The visual property of something shining with reflective light; shine..
Use shininess when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Shininess means The visual property of something shining with reflective light; shine..
Common synonyms include lustre, sheen, luster.
The opposite depends on the specific sense.
Use shininess where its definition matches the intended context.
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