The term 'fling forcefully' can be summarized by two crossword solutions: 'HURL' (4 letters) and 'HURTLE' (6 letters). Both words refer to the act of throwing something with great force. 'HURL' is a more general term, while 'HURTLE' implies a greater speed and intensity. Both words are often used in the context of physical objects being thrown, but they can also be used to describe emotions or ideas being forcefully expressed.