1. In a harmfully insidious manner
   "these drugs act insidiously"
   - perniciously

See also: insidious

• condescend
• condescending
• condescendingly
• condescendingness
• condescension
• condign
• condiment
• condition
• conditional
• conditional contract
• conditional probability
• conditional reaction
• conditional reflex
• conditional relation
• conditional response
• conditional sale
• conditionality
• conditionally
• conditioned
• conditioned avoidance
• conditioned avoidance response
• conditioned emotion
• conditioned emotional response
• conditioned reaction
• conditioned reflex