A synonym for "lifelikenesses" could be "realisms", indicating the degree to which something resembles reality. Another synonym might be "verisimilitudes", which also refers to the closeness to truth or reality. "Naturalisms" could also be used to describe the lifelikenesses of objects or scenes. "Authenticities" might be used to refer to the truthfulness of a depiction or experience. In many cases, the term "fidelity" could also be used to refer to the accuracy or closeness to the original. Other options include "resemblances", "facsimiles", and "representations". Ultimately, the choice of synonym depends on the context, intended meaning, and personal preference of the writer or speaker.