Capable of being agitated, stirred up, or disturbed; prone to becoming excited or upset.
From Latin 'agitare' (to shake, drive about) plus the suffix '-able' (capable of). The root likely derives from 'agere' meaning 'to do' or 'to drive.'
Medical researchers have found that some people have 'agitable' nervous systems due to genetic variations in dopamine receptors—this explains why some folks stay calm in chaos while others are frazzled by minor disruptions.
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