Anxiety-filled is a term used to describe a state of being that is characterized by feelings of worry, unease, and fear. TENSE is an appropriate five-letter word to describe this state, as it implies a heightened state of alertness and apprehension. This feeling can be caused by a variety of factors, such as a stressful situation or a traumatic event. It can also be a symptom of an underlying mental health condition, such as anxiety disorder or depression.