The phrase "dead-and-alive" is often used to describe something or someone who lacks energy, enthusiasm, or liveliness. There are several synonyms that can be used in place of this expression, including unenthusiastic, lethargic, lackluster, apathetic, indolent, languid, listless, and passive. All of these words suggest a lack of interest or energy, and they can be applied to a variety of situations. For example, a student who appears apathetic in class may be described as "dead-and-alive," while a party that lacks energy could be described as lackluster or lifeless. Choosing the right synonym can help to convey the intended meaning more precisely and effectively.