Final answer:
Trepidation means fear. It is a feeling of anxiety or worry about something that may happen or the anticipation of a negative outcome.
Step-by-step explanation:
Trepidation means fear. It is a feeling of anxiety or worry about something that may happen or the anticipation of a negative outcome. In the given text, the adventurer left with a feeling of trepidation, which suggests that the adventurer was fearful or anxious about what may lie ahead.