blame (v.)

c. 1200, "find fault with" (opposed to praise, commend); c. 1300, "lay responsibility on for something deemed wrong," from Old French blasmer (12c., Modern French blâmer) "to rebuke, reprimand, condemn, criticize," from Vulgar Latin *blastemare, from Late Latin blasphemare "to blaspheme, to speak lightly or amiss of God or sacred things," which also had a sense of "revile, reproach" (see blaspheme). Replaced Old English witan (with long "i"). Related: Blamed; blaming.

early 13c., "an act or expression of disapproval, rebuke, etc., for something deemed wrong;" mid-14c., "responsibility for something that is wrong, culpability," from Old French blasme "blame, reproach; condemnation," a back-formation from blasmer "to rebuke" (see blame (v.)).