pernicious

1. a. Quick; swift (to burn). Source: opted

2. a. Having the quality of injuring or killing; destructive; very mischievous; baleful; malicious; wicked. Source: opted

3. adj. exceedingly harmful Source: wordnet

4. adj. working or spreading in a hidden and usually injurious way Source: wordnet

5. Quick; swift (to burn). [R.] Milton. Having the quality of injuring or killing; destructive; very mischievous; baleful; malicious; wicked. Let this pernicious hour Stand aye accursed in the calendar. Shak. Pernicious to his health. Prescott. Syn. -- Destructive; ruinous; deadly; noxious; injurious; baneful; deleterious; hurtful; mischievous. -- Per*ni"cious*ly, adv., -- Per*ni"cious*ness, n. Source: webster

6. Quick; swift (to burn). [R.] Milton. Source: adambom

7. j:100 s exceedingly harmful s working or spreading in a hidden and usually injurious way Source: ecdict

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