The term 'fall clumsily' can be broken down into three crossword solutions: FLOP (4 letters), TUMBLE (6 letters), and PLOP (4 letters). FLOP is an informal verb meaning to move or fall suddenly and awkwardly, while TUMBLE is a verb meaning to fall clumsily or suddenly. Finally, PLOP is an informal verb meaning to fall or drop heavily and noisily. All three words describe the action of falling clumsily, with FLOP and PLOP being more informal than TUMBLE.