trepid (adjective)

1. The trepid protagonist hesitantly entered the haunted mansion, fearing what awaited him inside.

2. She was trepid to confess her feelings to him, worried about his response.

3. The trepid designer used neutral colors and minimalist furniture to create a calming and timid atmosphere in the bedroom.

4. The trepid superhero cautiously approached the villain's lair, unsure of what danger awaited him inside.