Yesterday’s solutions:

Across: 1 On sufferance. 7 Agent. 8 Adder. 9 Rue. 10 Matchless. 11 Planks. 12 Stupor. 15 Rhapsodic. 17 Era. 18 Union. 19 Irate. 21 Intersection.

Down: 1 Obstreperous. 2 Foe. 3 Entity. 4 Apathetic. 5 Cadge. 6 Preservation. 7 Arena. 10 Make sense. 13 Piece. 14 Admits. 16 Alien. 20 Arc.