Where does “автографичен” come from?

автографичен (Bulgarian) comes from Bulgarian -и́чен, from Latin -icus, from Proto-Italic *-ikos — forms adjectives with the sense of 'of or pertaining to'.

автографичен (Bulgarian): autographic

Definitions

autographic

Ancestry of “автографичен”, step by step

Step	Language	Word	Meaning
1	Bulgarian	-и́чен	ical adjective-forming suffix
2	Latin	-icus	belonging to; derived from; of or pertaining to;...
3	Proto-Italic	*-ikos	forms adjectives with the sense of 'of or pertaining to'

Every word from Proto-Italic *-ikos →Every word from Latin -icus →Every word from Bulgarian -и́чен →