The crossword solution for the term 'IT'S HARD TO HIT' is 'SLIDER', which is a six-letter word. A slider is a type of pitch in baseball, which is thrown with a low velocity and is difficult to hit. It is also known as a 'slip pitch' or a 'nickel curve'. The slider is usually thrown with a grip that causes the ball to spin sideways as it approaches the plate, making it difficult for the batter to hit.