1. In a harmfully insidious manner
   - insidiously 
2. In a noxiously baneful way
   - banefully

See also: pernicious

• Comatulidae
• comb
• comb jelly
• comb-footed spider
• comb-like
• comb-out
• comb-plate
• combat
• combat area
• combat boot
• combat casualty
• combat ceiling
• combat fatigue
• combat injury
• combat intelligence
• combat mission
• combat neurosis
• combat pay
• combat pilot
• combat ship
• combat zone
• combat-ready
• combatant
• combative
• combatively