The term 'QUICK THRUST' is a combination of two words, 'QUICK' and 'THRUST'. QUICK refers to something that is done quickly or with speed, while THRUST is an action of pushing or driving something forward. In the context of a crossword puzzle, the solutions for QUICK THRUST are 'STAB' (4 letters) and 'JAB' (3 letters). Both of these words refer to a QUICK, forceful movement, usually with a sharp object such as a knife or a spear. Stabbing and jabbing are both violent actions, but they can also be used in a non-violent context, such as when a doctor uses a needle to give a patient an injection.