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Hardworking
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Thesaurus
ardent
assiduous
diligent
drudging
energetic
fervent
grinding
grubbing
hard
indefatigable
industrious
laboring
laborious
never idle
pegging
plodding
plugging
relentless
sedulous
slaving
sleepless
slogging
straining
strenuous
striving
struggling
sweating
tireless
toiling
unflagging
unremitting
unsleeping
unsparing
unwearied
vehement
working
zealous
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