Yours sincerely is a conventional closing phrase in written correspondence, typically used in formal or semi-formal letters when the recipient is unknown or you know them well. The two-word phrase functions as a courteous sign-off, with pronunciation that emphasizes the possessive determiner yours followed by the adverb sincerely, often reduced in rapid speech. In full, it signals respect and takes a stable stress pattern on the content words before the final punctuation.
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