unwritten law
— Noun
– English
~ law based on customary behavior
unwritten
— Adjective
– English
~ based on custom rather than documentation; "an unwritten law"; "rites...so ancient that they well might have had their unwritten origins in Aurignacian times"- J.L.T.C.Spence
unwritten
— Adjective
– English
~ using speech rather than writing; "an oral tradition"; "an oral agreement"
unwritten
— Adjective
– English
~ said or done without having been planned or written in advance; "he made a few ad-lib remarks"
unyielding
— Adjective
– English
~ stubbornly unyielding; "dogged persistence"; "dour determination"; "the most vocal and pertinacious of all the critics"; "a mind not gifted to discover truth but tenacious to hold it"- T.S.Eliot; "men tenacious of opinion"
unyielding
— Adjective
– English
~ resistant to physical force or pressure; "an unyielding head support"