The verb "appal" is most commonly used in formal or literary contexts, though it can also be used informally to describe strong reactions to shocking events. It is typically associated with intense feelings of disgust, fear, or surprise. This word often appears in media reports or discussions of tragic events, where its usage conveys the profound impact an event has on a community or an individual.
The emotional response implied by the word suggests a reaction that is more than just surprise—it connotes a deeper sense of disturbance, and often a desire to withdraw from or deny the event. The use of "appal" can evoke a sense of helplessness or overwhelming dread, and thus, it is often employed in situations where the shocking nature of something cannot be easily ignored or accepted.