long
a mile long
ageless
all-comprehensive
all-inclusive
articulated
boundless
catenated
ceaseless
coeternal
concatenated
connected
constant
continual
continued
continuing
continuous
countless
cyclical
dateless
direct
drawn-out
endless
eternal
eterne
ever-being
ever-durable
ever-during
everlasting
everliving
exhaustless
extended
extending everywhere
extensive
far-flung
far-reaching
fargoing
featureless
gapless
illimitable
illimited
immeasurable
immediate
immemorial
immense
incalculable
incessant
dismal
dreary
fruitless
lengthy
monotonous
perilous
tedious
trackless
unending
uninterrupted
determinable
terminable