for‧sake past tense forsook, past participle forsaken [transitive] formal
to leave someone, especially when you should stay because they need you [= abandon]:
children forsaken by their parents
to stop doing, using, or having something that you enjoy [= give up]:
She will never forsake her vegetarian principles.
to leave a place, especially when you do not want to:
He has forsaken his native Finland to live in Britain.