downrate
Etymology
From down- + rate.
downrate means to give something a lower rating. Lexicurio rates it Sui generis — a strength score of 89 out of 100.
verb
- To give something a lower rating.“The eight-minute connection to East Midlands Railway is a breeze. The train is 170208, its First Class downrated, so I enjoy the wider seats for the hour to Ely, where I arrive a couple of minutes early.”