laborious (adjective) laborious: hard, difficult
Sinonime: dizzying,
excessive,
exorbitant, extortionate,
extreme,
high*, immoderate,
inordinate, overpriced,
stiff, stratospheric, towering, uncalled-for, unconscionable, undue, unmeasurable,
unreasonableAntonime: easy,
effortless,
facile,
simple,
trivial