The phrase "gat out from under my feet" is slang that means someone or something has been removed from their presence, typically because they were causing interference or annoyance. This phrase often refers to a person or thing that was causing a hindrance or obstacle in someone's path, and now they are finally able to move forward without any distractions. Some synonyms for this phrase include "moved out of the way," "cleared out," "removed from the equation," "put aside," and "taken care of." These synonyms convey the same idea of eliminating a problem or obstacle in one's path, allowing them to continue on their journey unhindered.