When you have very long hair and you suddenly shave your head, this is an example of a change that would be described as drastic.
Origin of drasticClassical Greek drastikos, active from dran, to do: see drama
- Extreme in effect; severe or radical: the drastic measure of amputating the entire leg; drastic social change brought about by the French Revolution.
- Acting rapidly or violently: a drastic emetic.
Origin of drasticGreek drastikos active from drastos to be done from drān to do
(comparative more drastic, superlative most drastic)
Ancient Greek δραστικός (drastikos, “active, efficient”), from δρᾶσις (drasis, “strength, efficacy”), itself from δράω (drao, “to do”)