Go to ground is a phrase used to describe the act of hiding or retreating from a situation. The crossword solutions for this phrase are HIDE (4 letters) and ALIGHT (6 letters). HIDE is an action verb meaning to conceal oneself or something from view, while ALIGHT is a verb meaning to descend from a higher place to a lower one. Therefore, Go to ground can be interpreted as retreating or hiding from a situation by descending to a lower place.