Drastic
来自Big Physics
late 17th century (originally applied to the effect of medicine): from Greek drastikos, from dran ‘do’.
wiktionary
From Ancient Greek δραστικός(drastikós, “active, efficient”), from δρᾶσις(drâsis, “strength, efficacy”), itself from δράω(dráō, “to do”)
etymonline
drastic (adj.)
1690s, originally of medicines, "forceful, vigorous," especially in effect on bowels, from Greek drastikos "effective, efficacious; active, violent," from drasteon "(thing) to be done," from drāo "to do, make, act, perform" (especially some great deed, whether good or bad), which is of uncertain etymology. Sense of "extreme, severe, acting with force or violence" is recorded by 1808. Related: Drastically.
