The term 'Anxiety Stimulus' is a synonym for the word 'Stressor', which is an 8-letter word. A stressor is an event or situation that causes stress, and can be physical, psychological, or environmental. Examples of stressors include work deadlines, financial problems, or a natural disaster. Stressors can also be internal, such as worrying about a future event or feeling overwhelmed. Stressors can have both positive and negative effects on an individual's mental and physical health.