"Lied dormant" is an expression commonly used to describe a state of inactivity or prolonged sleep of something that was once active. There are numerous synonyms that can replace this phrase, depending on the context in which it is used. Some of the synonyms that can be used instead of "lied dormant" are "inactive," "dormant," "lying fallow," "unused," "hibernating," "sleeping," "at rest," "quiescent," and "in abeyance." These synonyms serve as perfect substitutes that convey the same meaning but add variety and depth to the writing. A writer can utilize these synonyms and other related expressions to keep the text engaging and compelling.