To attempt to stop the progression of; to resist or antagonize by physical means, or by arguments, etc.; to contend against.
To object to.
To place in front of, or over against; to set opposite; to exhibit.
To present or set up in opposition; to pose.
To disallow.
To reject an option from a list of possibilities.
To make something impossible.
To cross an item out by drawing a straight line through it, as with a ruler.
To make unavailable.