(law) an explanation of the fundamental reasons (especially an explanation of the working of some device in terms of laws of nature); "the rationale for capital punishment"; "the principles of internal-combustion engines"
implying justice dictated by reason, conscience, and a natural sense of what is fair to all; "equitable treatment of all citizens"; "an equitable distribution of gifts among the children"
dutifully complying with the commands or instructions of those in authority; "an obedient soldier"; "obedient children"; "a little man obedient to his wife"; "the obedient colonies...are heavily taxed; the refractory remain unburdened"- Edmund Burke