THESAURUS
birthright
appanage, appurtenance, authority, bequeathal, bequest, borough-English, claim, coheirship, conjugal right, coparcenary, demand, divine right, droit, due, entail, faculty, gavelkind, heirloom, heirship, hereditament, heritable, heritage, heritance, inalienable right, incorporeal hereditament, inheritance, interest, law of succession, legacy, line of succession, mode of succession, natural right, patrimony, perquisite, postremogeniture, power, prerogative, prescription, presumptive right, pretense, pretension, primogeniture, privilege, proper claim, property right, reversion, right, succession, title, ultimogeniture, vested interest, vested right
ROGET THESAURUS
birthright
Dueness
N
due, dueness, right, privilege, prerogative, prescription, title, claim, pretension, demand,
birthright, immunity, license, liberty, franchise, vested interest, vested right, sanction, authority, warranty, charter, warrant, constitution, tenure, bond, claimant, appellant, plaintiff, having a right to, 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, lawful, licit, legitimate, legal, legalized, square, unexceptionable, right, equitable, 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, duly, ex officio, de jure, by right, by divine right, jure divino, Dei gratia, in the name of, civis Romanus sum, +a chaque saint sa chandelle.