Middle English, dispute, guilt, purpose, from Old English sacu guilt, action at law; akin to Old High German sahha action at law, cause, Old English sēcan to seek
— more at seek
Date:
13th century
1:end
, purpose<for the sake of argument>2 a: the good, advantage, or enhancement of some entity (as an ideal) <free to pursue learning for its own sake
— M. S. Eisenhower>b: personal or social welfare, safety, or benefit