Question: What is a verb for *illusion*? I want to use it in a sentence like the following:

> 
> The optical effect [illudes] my perception of its real shape.
> 
> 
> 

But **illude** does not exist. But I cannot find *illude* in my Dictionary (OS X Dictionary.app). I want to find a verb that is somewhere between *deceive* and *confuse*.

Answer: 
Obfuscate can work.

1. to confuse, bewilder, or stupefy.
2. to make obscure or unclear: to obfuscate a problem with extraneous information.
3. to darken.
You could use *illusory*, which is an adverb.