I've been to several specialists and no one can cure this insidious rash.
The insidious spread of misinformation on social media has led to confusion and division among the population.
Insidious means deceitful and cunning. You could use it in a sentence such as "His insidious plan to take over the world might actually work".
The insidious nature of the virus allowed it to spread undetected throughout the community.
You divide it like this: in-si-di-ous.
Answer this question… How do you make a sentence using the word manipulation
The hunter stalked silently through the forest, eyes trained on its prey.
Plagiarism is an insidious habit.
Morrie's disease "ALS" is insidious .
the investigators uncovered an insidious scheme to rob people of their money
Insidious means deceitful and cunning. You could use it in a sentence such as "His insidious plan to take over the world might actually work".
Facetious or insidious
Another word for "insidious" is the word "treacherous"[or "sly",or "crafty"].
I am not writing a sentence using that word.
I can give you a sentence using the word galaxy.
a sentence using the word endotracheal
This is a sentence using the word aviator.
I am saying a sentence using the word collagen.
This is a sentence using the word monomer. :P