pass partout (noun) master key: key opening all locks of a place
Sinonime: determined, firm, fixed, hanging tough, hard-nosed, immovable,
inexorable, inflexible,
insistent,
intransigent,
obdurate, pat,
relentless,
resolute,
rigid,
set, set in stone, standing pat,
stiff,
stubborn, unbendable, unbending,
uncompromising,
unrelenting, unshakable, unswayable
Antonime: flexible, pliant,
submissive,
yielding