Im losing my mind trying to find the passcode for day 10 to avoid the *BAD* and *BAD* happening. Apparently its one of the words that is said throughout day 9, but ive been at this for literal hours trying at this point more than 100 words. I THINK its a noun, since every other passcode ive found is a noun. Can I get a hint? Which route to look in? Some kind of relation? I dont need the exact word, just something more than "Check every word on every route of day 9, some words repeat and its one of those"
Whoever told you Day 9 is wrong for starters.
The whole point of Dave's investigation on Day 10 is to guess the password on that day, so you should think about where his investigation takes him and what things come up. It's also not tied to any route so you shouldn't worry about missing it for playing the wrong route.