In Hebrew there is an idiom that translates to English like this: "To go without and to feel with". The usual meaning is that one doesn't have some object or ability but is nevertheless is able to act or to be perceived as if one did have the object or ability. An element of deception is usually not involved, at least not overtly.
EXAMPLES: For instance, you can use it in engineering when you use an approximate method to get cheaply/quickly an otherwise expensive outcome.
Another usage example from a random search: I found an article with this idiom as its title. It refers to the USA going without but feeling with in the wake of the 2011 credit downrating. The idea is that although the USA no longer has stellar credit rating it is still able to borrow money as cheaply as before.