1. Intensely zealous or fervid
   "fierce white-hot loyalty" 
2. Glowing white with heat
   "a white-hot centre of the fire"
   - white

See also: hot

• bitter almond oil
• bitter aloes
• bitter betch
• bitter cassava
• bitter chocolate
• bitter dock
• bitter end
• bitter floom
• bitter hickory
• bitter lemon
• bitter orange
• bitter orange tree
• bitter pea
• bitter pecan
• bitter pignut
• bitter principle
• bitter salts
• bitter spar
• bitter-bark
• bittercress
• bitterish
• bitterly
• bittern
• bitterness
• bitternut