exacting (adj.)

• abstruse
• accurate
• arduous
• arousing
• astringent
• attentive
• austere
• authoritarian
• brutal
• burdensome
• censorious
• choosy
• clamant
• clamorous
• close
• complex
• conscientious
• correct
• critical
• crying
• cutthroat
• delicate
• demanding
• detailed
• difficult
• discriminating
• discriminative
• dour
• draining
• educible
• eductive
• evocative
• exact
• excessive
• exigent
• exorbitant
• exquisite
• extortionate
• extravagant
• fancy
• fastidious
• fine
• finical
• finicky
• formidable
• fussy
• grasping
• grievous
• grim
• hairy
• hard
• hard-fought
• harsh
• hypercritical
• immoderate
• imperative
• importunate
• inflationary
• inordinate
• insistent
• instant
• intricate
• knotted
• knotty
• laborious
• loud
• mean
• meticulous
• minute
• narrow
• nice
• operose
• oppressive
• outrageous
• overpriced
• particular
• persistent
• pertinacious
• picky
• precise
• preposterous
• pressing
• priggish
• prohibitive
• prudish
• punctilious
• punctual
• puritanic
• refined
• religious
• rigid
• rigorous
• rough
• rugged
• scrupulous
• selective
• sensitive
• severe
• spiny
• spiraling
• steep
• stern
• strenuous
• strict
• stringent
• subtle
• taxing
• thorny
• ticklish
• toilsome
• tough
• tricky
• trying
• tyrannical
• unconscionable
• undue
• unreasonable
• unsparing
• unwarranted
• uphill
• urgent
• usurious
• weighty
• wicked