"Introing" is a colloquial contraction of the word "introducing," which means to present someone or something to others in a formal or informal manner. There are various synonyms for this word depending on the context and the level of formality. For instance, "presenting" could be used in a business or formal setting instead of saying introing. "Introducing" can also be substituted with "making known", "bringing in", or "presenting to the audience." On the other hand, some casual synonyms of introing that might be used in everyday conversations could include "hooking up," "linking up," or "getting acquainted." Overall, there are a variety of synonyms for introing that can convey different tones, depending on the situation.