Insidious(Adjective)
Spreading gradually or without being noticed, but causing serious harm.
Hindi meaning:धोखेबाज
Synonyms: Stealthy, Guileful, Wily, Deceitful
Antonyms: Honest, Sincere, Harmless, Fair
Example: These are the insidious effects of polluted water supplies.
Trick to remember: In seedhiyon se Insidious log upar jaate hain.









