"I am at present, my dear Copperfield, engaged in the sale of corn upon commission. It is not an avocation of a remunerative description -- in other words it does not pay -- and some temporary embarrassments of a pecuniary nature have been the consequence. I am however delighted to add that I have now an immediate prospect of something turning up ...."
[Micawber etymology, Micawber origin, 英语词源]