Trampling underfoot is a phrase that describes the act of crushing or stepping on something with force. It can be used to describe a physical action, such as stepping on an object, or a figurative action, such as crushing someone's spirit. The crossword solutions for this term are CRUSH (5 letters), STEPON (6 letters), and TREADON (7 letters). All three words refer to the same concept of trampling something underfoot.