The phrase "looking up down" can be replaced with various synonyms depending on the context and intent behind the message. For example, "scanning" can be substituted when searching for something in detail, while "surveying" implies a broader search for information. "Peering" denotes a more intense effort to see something clearly, while "gazing" suggests a relaxed and prolonged observation. "Inspecting" implies a critical examination, while "perusing" suggests a thorough reading or browsing of material. In summary, selecting the appropriate synonym for "looking up down" can add nuance to the message and increase clarity in communication.