"Outside in" is a phrase that describes the act of looking at something from a completely different perspective than usual. There are several synonyms that can be used to convey the same meaning, such as "reverse engineering," "inverted thinking," "flipping the script," "reversing the paradigm," "upending the norm," and "turning things around." All these expressions suggest the idea of approaching a problem or situation in an unconventional and creative way, looking at it from a fresh angle to gain new insights and solutions. Whether in business, art, or personal relationships, applying an "outside in" mindset can be a powerful tool for success.