"Are striking" is a phrase used to describe something that is eye-catching, noticeable or remarkable. There are several synonyms that can be used in its place to express the same meaning, depending on the context: Impressive, notable, outstanding, remarkable, arresting, remarkable, noticeable, exceptional, remarkable, stunning, impressive, eye-catching, striking, spectacular, dramatic, breathtaking, magnificent, distinctive, remarkable, outstanding and unforgettable. Each of these synonyms adds an additional layer of description, emphasizing different aspects of what it means to be striking, and allows for more precise and nuanced language. By using synonyms, writers and speakers can vary their vocabulary and add depth to their descriptions.