A substance which elicits an active physiological or behavioral response.
tonic, restorative, reviver, energizer, refresherView synonyms
- ‘Some people find that coffee brings out tremor; this is due to the presence of caffeine, which is an excitant; these effects are not, however, universal.’
- ‘The resulting synaptic inhibition is characterized by either a depressant or an excitant effect, depending on the population of cells involved.’
We take a look at several popular, though confusing, punctuation marks.