The term 'turn topsy-turvy' is used to describe a situation that has been completely reversed or thrown into chaos. The crossword solutions for this term are UPEND (5 letters), CAPSIZE (7 letters), and UPSET (5 letters). UPEND means to turn something upside down, CAPSIZE means to overturn or cause to sink, and UPSET means to disturb the balance or equilibrium of something. All three words describe the same concept of turning something upside down or throwing it into chaos.