Of foods and commodities, to spoil, rot, or otherwise become unusable due to age or storage conditions.
Of a person or entity, to cease to be reputable and instead become delinquent, criminal, immoral, corrupt or poorly behaved.
Of a geographic area, to become unsafe.
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.
Up a slope or grade.
An upward grade or slope.
An improvement
An improved component or replacement item, usually applied to technology