Capable of being aroused, awakened, or stirred to action or emotion.
From arouse (origin uncertain but possibly from Old Norse reysa) plus -able (Latin suffix meaning 'capable of'). The -able suffix indicates something can be done to the subject.
Medical professionals use 'arousable' to describe patients' consciousness levels—someone who is 'arousable but not alert' is in a specific state that helps doctors track recovery from anesthesia or injury!
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