"sincerly" is probably misspelled. Trying sincerely instead Definition of sincerely
1
[ adverb ] with sincerity; without pretense

Synonyms

unfeignedly truly

Examples

"she praised him sincerely for his victory" "was unfeignedly glad to see his old teacher" "we are truly sorry for the inconvenience"

2
[ adverb ] written formula for ending a letter

Synonyms

sincerely_yours

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