- The definition of drastic is something radical or extreme.
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: Classical Greek drastikos, active ; from dran, to do: see drama
- drastically adverb
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- Severe or radical in nature; extreme: the drastic measure of amputating the entire leg; drastic social change brought about by the French Revolution.
- Taking effect violently or rapidly: a drastic emetic.
Origin: Greek drastikos, active, from drastos, to be done, from drān, to do.
- drasˈti·cal·ly adverb