Noah Webster's Dictionary (a.) Having the quality of injuring or killing; destructive; very mischievous; baleful; malicious; wicked.

Multi-Version Concordance Pernicious (3 Occurrences) 1 Timothy 6:9 But people who are determined to be rich fall into temptation and a snare, and into many unwise and pernicious ways which sink mankind in destruction and ruin. (WEY) 2 Peter 2:2 And many shall follow their pernicious ways; by reason of whom the way of truth shall be evil spoken of. (KJV WBS) Job 30:12 At my right hand rise the young brood; they push away my feet, and raise up against me their pernicious ways; (DBY)