This is the 942nd most frequent Bulgarian word.
негов
"His" (possessive pronoun).
The word 'негов' modifies 'книга' to indicate possession, agreeing in gender and number.
Неговата книга е на масата.
His book is on the table.
The word 'негов' acts as a possessive pronoun, agreeing with the gender of 'решение'.
Това е неговото решение.
This is his decision.
The word 'негов' is in plural form to modify 'статии' and indicate possession.