The term 'devoid of emotion' can be summarized by two crossword solutions: STOIC (5 letters) and NUMB (4 letters). The term 'STOIC' is derived from the ancient Greek philosophy of Stoicism, which emphasizes the importance of accepting life's hardships and remaining emotionally detached. The term 'NUMB' refers to a lack of feeling or sensation, often caused by emotional shock or trauma. Both terms refer to a lack of emotion, suggesting that the person in question is not experiencing any strong emotions.