late 14c., of things, "to one's liking, pleasant, satisfactory, suitable," from Old French agreable "pleasing; in agreement; consenting" (12c., Modern French agréable), from agreer "to satisfy; to take pleasure in" (see agree). Of persons, "willing or ready to consent," mid-15c. Related: Agreeably; agreeability; agreeableness. To do the agreeable (1825) was to "act in a courteous manner."
