arcane (adjective) arcane: hidden, secret
Sinonime: 24/7, all day and all night, at all times, ceaseless,
constant,
continuous, day-and-night,
endless,
eternal,
everlasting,
interminable, never-ending, nonstop,
ongoing,
perpetual,
persistent,
relentless, round-the-clock,
timeless, unceasing,
unending, uninterrupted
Antonime: common,
commonplace,
known,
normal, outward