The Full form of SY is Sincerely Yours, or SY stands for Sincerely Yours, or the full name of given abbreviation is Sincerely Yours.
SY (Sincerely Yours)
Sincerely Yours is known as SY.
SY all full forms
All the above full forms are related to SY. A little information is given about one of these full forms. If you are not satisfied with the information given about 'Sincerely Yours (SY)', then comment. Or if you know more about 'Sincerely Yours (SY)', then write.