IPA: /fɔːrˈseɪk/
KK: /fɔrˈseɪk/
To give up or abandon something or someone that you once cared about.
He decided to forsake his old habits and start fresh.
Past: forsook
Past Participle: forsaken
Forsake → It is formed from "for-" (meaning away or off) and "sacare" (from Old English *sacian*, meaning to make sacred or to dedicate). The word means to turn away from or to abandon something that was once held sacred or dear.
Think of turning 'away' ('for-') from something you once 'dedicated' ('sacare') yourself to — that's why forsake means to abandon or give up.