### Clue: Monopolised the market, but put in a difficult position (8)
### Answer: CORNERED 
 ### Explanation: Definition: Monopolised the market,put in a difficult position
  Double defn: 1st: For a seller, gained practically 100% of the market share, so that one is able monopolise it; and 2nd: At the same time, put all the other sellers in a corner,a difficult position to get out of from – from the literal sense of being in a corner, worse than having your back to the wall.