stressor
UK: ˈstrɛsə | US: ˈstrɛsər
n. a factor, condition, or stimulus that causes stress
n. (psychology) an external or internal pressure that triggers a stress response
The word "stressor" combines "stress," derived from Middle English distress (via Old French estresse, meaning "narrowness" or "oppression"), with the agentive suffix "-or" (from Latin -or, denoting a person or thing performing an action). The term emerged in the early 20th century within psychology to describe external/internal triggers of stress, reflecting the modern understanding of stress as a measurable physiological and psychological response.
Work deadlines are a common stressor for many employees.
Financial instability can be a significant stressor in relationships.
The doctor identified noise pollution as a primary stressor in urban environments.
Chronic stressors may weaken the immune system over time.
She practiced mindfulness to cope with daily stressors.