kill (someone) off

Translations
убивать (кого-то)
The author decided to kill off the main character in the last chapter.
Автор решил убить главного героя в последней главе.
Definitions
To cause a character or person to die, especially in a story, film, or series, often as part of the plot.
Words
kill

verb
убить
someone

pronoun
кого-то
off

adverb
окончательно