To become thick or thicker.
To make (soil) fertile and fruitful.
To become fertile and fruitful.
To cause (a person or animal) to be fat or fatter.
To become fat or fatter.
To make thick or thicker (something containing paper, often money).
To gain richness; become heightened or intensified in brilliancy.
To make or render rich or richer.
To become rich or richer; become superior in quality, condition or effectiveness.