To corrupt or damage.
To soil or stain; to dirty.
To become soiled or tarnished.
Up a slope or grade.
An upward grade or slope.
An improvement
An improved component or replacement item, usually applied to technology
To improve, usually applied to technology, generally by complete replacement of one or more components
To replace with something better.
To improve the equipment or furnishings of or services rendered to
To replace a program with a later version of itself, a version having a higher version number or marketed under a more recent product name.
To improve in condition or status.