The Japanese noun 'ストレス (sutoresu)' is a loanword from English, meaning 'stress'. It refers to mental or emotional strain resulting from demanding circumstances. This term is commonly used in both personal and professional contexts to describe feelings of pressure or tension. For example: I have a lot of stress at work「仕事でストレスが多い」(しごとでストレスがおおい). Stress can affect your health「ストレスは健康に影響する」(ストレスはけんこうにえいきょうする). The word is often used in discussions about mental health, work-life balance, and daily challenges.