black economy 
noun British
The part of a country’s economic activity which is unrecorded and untaxed by its government: a lot of childcare is in the black economy...
- An added bonus may be a decrease in the level of activity of the black economy.
- The EU estimates that the black economy accounts for around 20 per cent of the GDP in several countries, while the figure for other countries is put at 30 per cent.
- It forces them reluctantly to become part of the black economy, because the cost of legitimately employing a childminder is unviable.
- Frege, Gottlob
- Freiburg
- freight
- freightage
- freight car
- freighter
- freight forwarder
- freighting
- Freightliner
- freight operator
- freight terminal
- freight ton
- freight train
- freight yard
- Frelimo
- Fremantle
- Fremont
- French
- French 75
- French and English
- French and Indian War
- French angelfish
- French bean
- French bed
- French bedstead