countless
immeasurable
incomputable
indeterminable
inestimable
infinite
innumerable
innumerous
multitudinous
myriad
numberless
uncounted
unnumberable
unnumbered
unnumerable
able
agnostic
all-comprehensive
all-inclusive
ambiguous
boundless
capricious
chancy
changeable
dicey
doubting
endless
enigmatic
equivocal
erratic
eternal
exhaustless
extending everywhere
fickle
hesitant
hesitating
illimitable
illimited
immense
incognizable
incomprehensible
indecisive
indemonstrable
inexhaustible
infinitely continuous
interminable
interminate
irresolute
limitless
measureless
mysterious
no end of
perpetual
polysemous
puzzling
sealed
appreciable
inexplicable
intangible
irreparable
overwhelm
prodigious
unbelievable
unimaginable
unlimited
unprecedented
unspeakable
unthinkable
untold