To enter (a name) on a list or in a register.
To write (one's signature):
Pen is defined as to write something using pen and ink.
To designate, mention, or refer to by name
To express approval of or give support to, especially by public statement; sanction:
Find another word for autographing. In this page you can discover 6 synonyms, antonyms, idiomatic expressions, and related words for autographing, like: inscribing, signing, penning, naming, subscribing and endorsing.