1 - appailing, disease inducing, too painful, should never been made, why oh lord why
2 - almost as bad as 1, but not as harmful to the brain
3 - shit, garbage, pretty bad
4 - weak, bad, boring, disappointing
5 - average, neutral, the middle ground, no like or dislike, watchable, forgetable
6 - fine, cool, amusing, did it's job
7 - good, nice, above average cool, amused me more, yay
8 - really good stuff
9 - great, amazing, impressed me, loved, wow
10 - masterpierce, obra prima, love, salvation, redemption, my sun and stars
Ratings also come from my mood, example: something is 7.5, I might round up to 8 or 7 depending on how I feel or whatever. I can also change it later on, so don't take these too seriously. They are not accurate.
Also, all my ratings are obviously subjective, they are based on my personal taste and appreciation for what I watched, not on deep analysis of technical points and plot and blabalabla.