The phrase 'just looking' is commonly used when a person is browsing a store or an online shopping site without a clear intention to buy anything. However, there are many other synonyms that can convey the same message. Some alternatives include, 'window shopping', 'browsing', 'perusing', 'surveying', 'scoping out', 'checking out', 'exploring', 'examining', 'inspecting', and 'viewing'. Using synonyms can help to sound more creative and varied in conversation and writing. Therefore, it's important to explore different vocabulary options to convey the same message in a more engaging way.