adjective C1 Latin origin insidious /ɪnˈsɪd.i.əs/  ·  in-SID-ee-uhs دھوکہ دہی بھراخفیہ خطرناکپراسرار Roman Urdu: dhoka dahi bhara ENGLISH MEANING Harmful because it works in a subtle, gradual way. Insidious describes something that proceeds stealthily and subtly, causing damage or danger without being immediately obvious. It is often used for diseases, plans, or influences that hide[...]