Very, usually associated with praise.
Enjoyable.
That cracks; that produces a sharp sound as of something splitting or breaking.
Great.
The formation of cracks on a surface.
The thermal decomposition of a substance, especially that of crude petroleum in order to produce petrol / gasoline.
The production of a crack sound.
To a certain degree or extent
To such a quantity, degree etc.
A particular amount, often a large or excessive amount.
A demonstrated amount.