"Go into" is a commonly used phrasal verb that means to enter or participate in something. If you're looking for synonyms for this phrasal verb, some possible options include "engage in," "partake in," "enter into," "embark on," "begin," "undertake," "commence," "immerse oneself in," "dive into," "delve into," "start on," "resolve to pursue," and "set about." All of these alternatives can be used in place of "go into" to add variety and clarity to your writing or speech. Consider the context and tone of your message when choosing the most appropriate synonym for the situation.