Doublespeak is language that deliberately disguises, distorts, or reverses the meaning of words. Doublespeak may take the form of euphemisms (e.g., “downsizing” for layoffs, “servicing the target” for bombing), making the truth less unpleasant, without denying its nature. It may also be deployed as intentional ambiguity, or reversal of meaning (for example, naming a state of war “peace”). In such cases, doublespeak disguises the nature of the truth, producing a communication bypass.
However, euphemism is not the same as doublespeak. It will not be considered as doublespeak if it is used appropriately and without the intention to deceive. For example, using “passed away” to suggest somebody is dead is an appropriate use of euphemism.