exigent (adj.)

• accurate
• acute
• astringent
• attentive
• austere
• authoritarian
• burdensome
• burning
• charged
• clamant
• clamorous
• close
• compelling
• compulsory
• conscientious
• correct
• critical
• crucial
• crying
• decisive
• delicate
• demanding
• detailed
• dour
• draining
• emergent
• exact
• exacting
• exorbitant
• exquisite
• extortionate
• fine
• finical
• finicky
• fussy
• grasping
• grievous
• grim
• harsh
• high-pressure
• imperative
• imperious
• importunate
• insistent
• instant
• loaded
• loud
• mandatory
• menacing
• meticulous
• minute
• narrow
• necessary
• necessitous
• nice
• obligatory
• oppressive
• particular
• persistent
• pertinacious
• pivotal
• precise
• pregnant
• pressing
• punctilious
• punctual
• refined
• religious
• rigid
• rigorous
• rugged
• scrupulous
• severe
• stern
• strict
• stringent
• subtle
• superincumbent
• taxing
• threatening
• tough
• unsparing
• urgent
• weighty