Pseudotype is a term that is typically used when referring to viruses or other diseases. It refers to strains that have been created in a laboratory using genetic engineering. In some cases, these strains may be weaker or less infectious than the original disease, while in other cases, they may be more potent and capable of causing greater harm. There are several synonyms that can be used in place of pseudotype. These include altered, counterfeit, fake, imitation, mock, phony, sham, and simulated. Each of these terms carries with it a slightly different connotation, but all can be used to refer to the concept of pseudotype in one way or another.