The phrase "keeps afloat" refers to the act of staying financially stable or managing to survive a difficult situation. Some antonyms for this phrase include "goes under," "sinks," "collapses," "fails," and "struggles." These words suggest a lack of financial stability, inability to manage or cope with challenges, and overall negative outcomes. Other antonyms could include "ignores," "forgets," "disregards," or "neglects," which highlight a lack of attention or concern for financial stability. It is important to note that antonyms for "keeps afloat" suggest the opposite of financial stability and should be avoided in efforts to maintain a healthy financial situation.