The term POWERFUL FELINE can be solved by the crossword solution PUMA, which is a four-letter word. Pumas, also known as cougars or mountain lions, are large cats native to the Americas. They are powerful predators and have been known to take down large prey such as deer and elk. Pumas are solitary animals and are rarely seen in the wild. They are an apex predator and are considered to be one of the most powerful felines in the world.