an exclamation used when making an earnest or solemn appeal. For ______'s sake is used with many
different nouns in such phrases as "for
God's sake," "for goodness' sake," "for
Pete's sake," "for pity's sake," etc., and literally means out of
consideration for, or because of
God, goodness, and so on. But if he is sitting down, for heaven's
sakes, think of how much, now, his voice has to do.