mostly cryptic URL riddle game (help?)

[wabbels]

Hello, ive just made this account cause im desperate and need help with a riddle/puzzle i've been sitting on for a few days now, and i cant figure out the solution for the life of me.
the game is: testoffailure (if you wanna try it youself go ahead its fun)
it is a URL based riddle which means you enter the answer of the puzzle on any given page in the URL and it takes you to the next page/puzzle (so /answer.html)
The page um stuck on is this one (dont click if you dont wanna give it a try yourself)

Spoiler

the one im stuck on

id be so thankful if anyone could help me figure this out. the answers are mostly one word answers.

thanks in advance,

wabbels