pernicious

Từ điển WordNet v3.1 - WordNet Dictionary

adjective

1. exceedingly harmful
• Syn:
baneful, deadly, pestilent
• Similar to:
noxious
• Derivationally related forms:
pestilence (for: pestilent), perniciousness, deadliness (for: deadly)
2. working or spreading in a hidden and usually injurious way
- glaucoma is an insidious disease
- a subtle poison
• Syn:
insidious, subtle
• Similar to:
harmful
• Derivationally related forms:
perniciousness, insidiousness (for: insidious)

• Từ đồng nghĩa / Synonyms:
  insidious, subtle, baneful, deadly, pestilent