demanding
Herculean
Spartan
Spartanic
abstruse
accurate
arduous
arousing
astringent
attentive
austere
authoritarian
brutal
burdensome
censorious
choicy
choosy
clamant
clamorous
close
complex
conscientious
correct
critical
crying
cutthroat
delicate
detailed
difficile
difficult
discriminating
discriminative
dour
draining
educible
eductive
elicitory
eradicative
evocative
exact
exactive
excessive
exigent
exorbitant
exquisite
extortionary
extortionate
extortive
acting
attracting
counteracting
detracting
distracting
enacting
extracting
impacting
interacting
reacting
redacting
retracting
subcontracting
subtracting