pernicious   (Sound)

The pernicious has 2 Senses.

• pernicious, deadly, baneful, pestilent
• exceedingly harmful
• 非常に有害な

• pernicious, insidious, subtle
• わずか
• working or spreading in a hidden and usually injurious way; "glaucoma is an insidious disease"; "a subtle poison"
• 秘密の通常有害な方法で行うこと、または広めるさま