affix (one's) signature to (something)
To sign one's name to something, such as a document. Jason reads every contract thoroughly before affixing his signature to the bottom of it. Once you affix your signature to this last document, you'll be the owner of a brand-new car!
affix (something) to (something)
To stick or fasten something on another object. Please affix stamps to these envelopes and then drop them in the mailbox.
affix one's signature to something
to sign one's name on something. I affixed my signature to each of the documents.
affix something to someone or something
to fasten or attach something to someone or something. Please affix these tags to your luggage.