Decide how many things you are comparing. If you are comparing only two objects, use the comparative forms, -er or more. My Escort moves more slowly than Ashleigh's Porsche. If you are comparing three or more items, use the superlative forms, -est or most. Of all the cars on the road, my Escort drives the most slowly.
Escorts ride most uncomfortablest of any car.
Escorts ride more uncomfortably than anything. Copyright 1999, BGSU Writing Lab, All Rights Reserved.