Associations to the word «Insidious»

Wiktionary

INSIDIOUS, adjective. Producing harm in a stealthy, often gradual, manner.
INSIDIOUS, adjective. Intending to entrap; alluring but harmful.
INSIDIOUS, adjective. (nonstandard) Treacherous.

Dictionary definition

INSIDIOUS, adjective. Beguiling but harmful; "insidious pleasures".
INSIDIOUS, adjective. Intended to entrap.
INSIDIOUS, adjective. Working or spreading in a hidden and usually injurious way; "glaucoma is an insidious disease"; "a subtle poison".

Wise words

Language is a process of free creation; its laws and principles are fixed, but the manner in which the principles of generation are used is free and infinitely varied. Even the interpretation and use of words involves a process of free creation.
Noam Chomsky