1) Acting with force or violence 2) Desperate 3) Dramatic, extreme 4) Extreme; rigorous 5) For emergencies only 6) Forceful 7) Like emergency measures 8) Like some measures 9) Radical 10) Rigorous 11) Severe 12) Thoroughgoing 13) Violent 1) Dire 2) Extreme 3) Forceful 4) Fundamental 
• (n.) A violent purgative. See Cathartic. • (a.) Acting rapidly and violently; efficacious; powerful; -- opposed to bland; as, drastic purgatives.
A violent purgative.
Dras'tic adjective [ Greek ..., from ... to do, act: confer French drastique . See Drama .] (Medicine) Acting rapidly and violently; efficacious; powerful; -- opposed to bland ; as, drastic purgatives. -- noun (Medicine) A violent purg...
[adj] - forceful and extreme and rigorous
adjective forceful and extreme and rigorous; `drastic measures`
acting with force or violence; violent. · extremely severe or extensive: a drastic tax-reduction measure.