The term 'very wealthy' can be expressed in two different ways in a crossword puzzle. The first is the four letter word 'RICH', which is an adjective meaning having a great deal of money or possessions. The second is the nineteen letter word 'RICHASASECULARMOUSE', which is a humorous phrase that implies someone is so wealthy that they are as RICH as a secular mouse, meaning a mouse that does not have to rely on divine intervention for its wealth.