Assure, 5 letters
Clinch, 5 letters
Clinch, as a deal, 5 letters
Clinch, as a victory, 5 letters
Close a deal, 5 letters
Close the deal, 5 letters
Close, as a deal, 5 letters
Complete successfully, 5 letters
Complete, as a deal, 5 letters
Conclude, 5 letters
Conclude a deal, 5 letters
Conclude as a deal, 5 letters
Conclude successfully, 5 letters
Conclude, as negotiations, 5 letters
Corner the market, 5 letters
Finalize, 5 letters
Finalize, as a deal, 5 letters
Finish, 5 letters
Gain a monopoly over, 5 letters
Ice, 5 letters
Make final, as a deal, 5 letters
Mend, 5 letters
Nail down, 5 letters
Stitch together, 5 letters
Successfully completed, 5 letters
Clinch the game, 13 letters
Be assured of winning, 15 letters