Backed at you is a common expression used to acknowledge or reciprocate a gesture or sentiment shown by someone else. There are several synonyms for the phrase that can be used in different contexts to express a similar sentiment. Some of these include "same to you," "likewise," "right back atcha," "ditto," and "you too." These phrases are typically used in response to someone who has offered a compliment, well-wishes, or a friendly gesture. Each synonym has its own unique tone, so it is important to choose the appropriate one based on the situation at hand. Ultimately, all of these expressions are a way to show gratitude and appreciation in return.