"Land up" is a phrasal verb that means to end up or arrive at a particular place, situation, or result. There are several synonyms for this phrasal verb that can be used depending on the context. Another common synonym for "land up" is "wind up," which has a similar meaning of ending up somewhere unplanned. Other synonyms that can be used are "arrive at," "come to," "reach," "find oneself in," and "emerge in." By using these synonyms, one can avoid repetition in their sentences and effectively communicate their ideas, giving their writing a more diverse and sophisticated feel.