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Pronunciation varies by accent · noun
A book in which letters (written correspondence) or copies of letters are kept..
Use letter book when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Letter book means A book in which letters (written correspondence) or copies of letters are kept..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use letter book where its definition matches the intended context.
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