drastic

from WordNet (r) 3.0 (2006)

drastic
    adj 1: forceful and extreme and rigorous; "drastic measures"

from The Collaborative International Dictionary of English v.0.48

Drastic \Dras"tic\, a. [Gr. ?, fr. ? to do, act: cf. F.
   drastique. See {Drama}.] (Med.)
   Acting rapidly and violently; efficacious; powerful; --
   opposed to {bland}; as, drastic purgatives. -- n. (Med.) A
   violent purgative. See {Cathartic}.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

37 Moby Thesaurus words for "drastic":
      Draconian, acute, cutting, desperate, dire, excessive, exorbitant,
      extravagant, extreme, fierce, forceful, furious, great, harsh,
      immoderate, intemperate, intense, keen, outrageous, piercing,
      potent, powerful, puissant, radical, rigorous, rough, severe,
      sharp, splitting, strong, tough, unconscionable, vehement,
      venomous, vigorous, violent, virulent

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