To relegate or assign (something) to a less insignificant status; diminish.
To treat (someone) in a slighting manner.
To make (something) smaller or as small as possible; shrink; reduce.
To remove (a window) from the main display area, collapsing it to an icon or caption.
To underestimate, or assign too low a value to.
To have too little regard for.
An undervaluation; a price or rate below the actual worth.