English definition of “sake”
for the sake of sth › for this reason or purpose: For the sake of convenience, they combined the two departments. For safety's sake, you shouldn't swim alone.
for the sake of sb › in order to help or please someone: He begged her to stay for the sake of the children.
for God's/goodness/heaven's, etc sake › something you say when you are angry about something: For heaven's sake, stop moaning!