Incapable of being transgressed or dishonored.

Immune to attack; incapable of being tampered with:
— Fortifications that made the frontier inviolable.

synonyms: impregnable, secure, strong, unassailable, unattackable.

Must be kept sacred.

synonyms: inviolate, sacrosanct.

Roget 528: concealed etc. v.; hidden; secret, recondite, mystic, cabalistic, occult, dark; cryptic, cryptical^†; private, privy, in petto, auricular, clandestine, close, inviolate; tortuous.    behind a screen etc. 530; undercover, under an eclipse; in ambush, in hiding, in disguise; in a cloud, in a fog, in a mist, in a haze, in a dark corner; in the shade, in the dark; clouded, wrapped in clouds, wrapt in clouds^†; invisible etc. 447; buried, underground, perdu [Fr.]; secluded etc. 893.    undisclosed etc. 529, untold etc. 527; covert etc. (latent) 526; untraceable; mysterious etc. (unintelligible) 519.    irrevealable^†, inviolable; confidential; esoteric; not to be spoken of; unmentionable.    obreptitious^†, furtive, stealthy, feline; skulking etc. v.; surreptitious, underhand, hole and corner; sly etc. (cunning) 702; secretive, evasive; reserved, reticent, uncommunicative, buttoned up; close, close as wax; taciturn etc. 585.    ... show more

Roget 924: having a right to etc. v.; entitled to; claiming; deserving, meriting, worthy of.    privileged, allowed, sanctioned, warranted, authorized; ordained, prescribed, constitutional, chartered, enfranchised.    prescriptive, presumptive; absolute, indefeasible; unalienable, inalienable; imprescriptible^†, inviolable, unimpeachable, unchallenged; sacrosanct.    due to, merited, deserved, condign, richly deserved.    allowable etc. (permitted) 760; lawful, licit, legitimate, legal; legalized etc. (law) 963.    square, unexceptionable, right; equitable etc. 922; due, en r gle; fit, fitting; correct, proper, meet, befitting, becoming, seemly; decorous; creditable, up to the mark, right as a trivet; just the thing, quite the thing; selon les r gles [Fr.].    ... show more

Roget 939: upright; honest, honest as daylight; veracious etc. 543; virtuous etc. 944; honorable; fair, right, just, equitable, impartial, evenhanded, square; fair and aboveboard, open and aboveboard; white [U.S.].    constant, constant as the northern star; faithful, loyal, staunch; true, true blue, true to one's colors, true to the core, true as the needle to the pole; marble-constant" [Antony and Cleopatra]; true-hearted, trusty, trustworthy; as good as one's word, to be depended on, incorruptible.    straightforward etc. (ingenuous) 703; frank, candid, open-hearted.    conscientious, tender-conscienced, right-minded; high-principled, high-minded; scrupulous, religious, strict; nice, punctilious, correct, punctual; respectable, reputable; gentlemanlike^†.    inviolable, inviolate; unviolated^†, unbroken, unbetrayed; unbought, unbribed^†.    innocent etc. 946; pure, stainless; unstained, untarnished, unsullied, untainted, unperjured^†; uncorrupt, uncorrupted; undefiled, undepraved^†, undebauched^†; integer vitae scelerisque purus [Lat.] [Horace]; justus et tenax propositi [Lat.] [Horace]. chivalrous, jealous of honor, sans peur et sans reproche [Fr.]; high-spirited.    supramundane^†, unworldly, other-worldly, overscrupulous^†.    ... show more

Not capable of being violated or infringed.

synonyms: absolute, infrangible.