Helping to share the web since 1996
Use the search bar above to find dictionary definitions - click home to search Link Centre for websites.
Dictionary definition for: Insidious
1. (s) beguiling but harmful; "insidious pleasures"
3. (s) working or spreading in a hidden and usually injurious way; "glaucoma is an insidious disease" "a subtle poison"
WordNet 2.1 Copyright Princeton University. All rights reserved.