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Pronunciation varies by accent · noun
A thin, pliable sheet of tin or an alloy of tin and lead, used as a protective wrapping..
Use tinfoil when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Tinfoil means A thin, pliable sheet of tin or an alloy of tin and lead, used as a protective wrapping..
Common synonyms include tin foil.
The opposite depends on the specific sense.
Use tinfoil where its definition matches the intended context.
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