The term 'floor it!' is a phrase used to tell someone to accelerate quickly and aggressively. The crossword solutions for this term are GUN (3 letters), SPEED (5 letters), TEAR (4 letters), HIE (3 letters), GOFAST (6 letters), LETERRIP (8 letters), RUNWIDEOPEN (11 letters), WINGONESWAY (11 letters), GOATFULLTILT (12 letters), GUNTHEENGINE (12 letters), and STEPONTHEGAS (12 letters). All of these words are related to the idea of accelerating quickly and aggressively, and can be used to describe the action of 'flooring it'.