WordNet sense 1 (come or be at an end):

discontinue

WordNet sense 2 (act in disregard of laws, rules, contracts, or promises):

break

WordNet sense 3 (make it possible through a specific action or lack of action for something to happen):

allow, let, permit, permit

WordNet sense 4 (fail to keep or to maintain; cease to have, either physically or in an abstract sense):

lose