1. Exceedingly harmful
   - baneful, deadly, pernicious 
2. Likely to spread and cause an epidemic disease
   - pestilential, pestiferous, plaguey

See also: epidemic, noxious, pestilence

• ice milk
• ice needle
• ice over
• ice pack
• ice plant
• ice rink
• ice sheet
• ice shelf
• ice show
• ice skate
• ice skating
• ice storm
• ice tea
• ice tongs
• ice up
• ice water
• ice yacht
• ice-clogged
• ice-cold
• ice-cream bean
• ice-cream cake
• ice-cream cone
• ice-cream float
• ice-cream soda
• ice-cream sundae