To append means to add on, usually to the end of something. You might want to append a clause onto a contract if you feel something has been left unsaid in it. You've probably seen the word append before, at least as part of another word: appendix.

What is the synonym of appended?

adjoin, fasten, affix, append (formal), subjoin.

How do you use appended?

An invitation to the reader to get in touch with the author could be appended to the article. Relevant extracts are appended to this article for easy reference. When you select the Append option, the contents of the file being sent will be appended to the file that already exists.