untrustworthy (adjective)

1. The villain in the comic book was portrayed as untrustworthy, always deceiving the main characters.

2. The novel featured an untrustworthy character who constantly lied to the other characters, causing conflict throughout the story.

3. The designer's latest collection received mixed reviews, with critics labeling it as untrustworthy due to its lack of originality and quality.

4. The contractor recommended avoiding that particular builder as they had a reputation for being untrustworthy and delivering subpar work.