The term "flood out" can refer to an overwhelming amount of water overtaking an area, but it can also be used more broadly to describe any situation where someone or something is pushed out or overwhelmed. Some synonyms for "flood out" in this sense could include "force out," "displace," "supplant," "overrun," "overtake," or "swamp." These terms imply a sense of urgency and intensity, suggesting that someone or something is being pushed out of their comfort zone or overwhelmed by a situation. Whether it's a physical or metaphorical flood, "flood out" implies a sense of danger or urgency, and its synonyms carry similar connotations.