derate /dē-rātˈ/

1. To relieve (wholly or partially) from paying local rates
2. To reduce the maximum capacity ratings of (a piece of electrical equipment) to allow for deterioration, etc

deratˈing noun

• better halves
• bettering
• betterings
• betterment
• betterments
• bettermost
• betterness
• betternesses
• better off
• better oneself
• betters
• better than a poke in the eye
• better than a poke in the eye with a sharp stick
• betties
• betting
• bettings
• betting shop
• betting shops
• bettong
• bettongs
• bettor
• bettors
• betty
• blow-off
• blow on