be lost black out capsize careen culbuter drop faint fall senseless founder go down gray out keel overset overthrow overturn pass out pitch pitchpole plunge scuttle sink slump somersault subvert succumb swoon tip over topple topple over topsy-turvify topsy-turvy tumble turn a somersault turn over turn topsy-turvy turn turtle turn upside down upset upset the boat upturn