fic ‧ tion ‧ al ‧ ize BrE AmE ( also fictionalise British English ) /ˈfɪkʃ ə nəlaɪz/ verb [transitive]
[ Word Family: adjective : ↑ fictional , ↑ fictitious , ↑ non-fiction ; noun : ↑ fiction , ↑ non-fiction ; verb : ↑ fictionalize ]
to make a film or story about a real event, changing some details and adding some imaginary characters:
a fictionalized account of his life in Berlin