Cliffjumper is an action-packed word that evokes imagination and thrill. But if you're looking for synonyms, there are several other words you can use. Similar words with a similar connotation include daredevil, adventurer, risk-taker, and thrill-seeker. You could also consider using words like jumper or leaper to imply the action of jumping off the edge. For a more dangerous connotation, try words like precipice and abyss. Alternatively, you could use mountaineer or rock climber to suggest someone who is scaling their way up the side of a cliff. There are many words to choose from, so experiment with different options to find the right fit for your context.