Which word means to be in a state of worry or anxiety?

Apprehension is the term that accurately describes a state of worry or anxiety. It conveys a sense of unease or nervous anticipation about a future event, often accompanied by a feeling that something undesirable might occur. This word captures the emotional state of being on edge or concerned, reflecting how individuals might feel when faced with uncertainty or potential danger.

In contrast, assurance refers to confidence or certainty in outcomes, which is the opposite of worry. Composure denotes a state of calmness and control, especially in stressful situations, thus contradicting the notion of being anxious. Conviction implies a strong belief or opinion about something, which does not inherently relate to feelings of anxiety or apprehension. Each of these alternatives signifies a different emotional state or concept that is distinct from the sense of worry encapsulated in the term "apprehension."