autograph
/ˈɔːtəɡræf/·오토그래프·noun, verb
a signature, especially of a famous person
GreekCEFR B1
Root
auto- (self) + Greek 'graphein' (to write)
Greek autographos (written by one’s own hand) → Late Latin autographum → English autograph
In a word
auto- (self) + graph (write) = 'written by one's own hand'. A celebrity autograph has value because of exactly the etymology — proof that they themselves wrote it. Not a copy, not a print: the hand was there.
Examples
Can I have your autograph, please?
She autographed my book.
He collects autographs of football players.
Related
paragraphphotographbiographygraphicautomatic