uninteresting
Herculean
aggravating
annoying
arduous
backbreaking
black
bleak
boresome
boring
borish
bothering
bothersome
burdensome
crushing
dark
dismal
disturbing
draining
drear
drearisome
dreary
effortful
exasperating
exhausting
fatiguesome
fatiguing
forced
funebrial
funereal
galling
gloomy
grave
gray
grim
grueling
harassing
hard-earned
hard-fought
heavy
hefty
importunate
importune
irking
irksome
irritating
Embarrass
disagreeable
fruitless
inconvenient
insipid
interminable
irritate
laborious
lengthy
monotonous
oppressive
tedious
toilsome
vexatious
refreshing
restful