drastic (adj.)
- 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