let go /lɛt goʊ/ /lɛt gəʊ/
to free /friː/ /friː/
to release /rɪˈliːs/ /rɪˈliːs/
to liberate /ˈlɪbəˌreɪt/ /ˈlɪbəreɪt/
to give up /gɪv ʌp/ /gɪv ʌp/
to quit /kwɪt/ /kwɪt/