Last week’s solution

Across: 1 Pejoratively; 7 Sinew; 8 Learn; 9 Pun; 10 Persevere; 11 Create; 12 Seldom; 15 Clamorous; 17 Bit; 18 Trade; 19 Fight; 21 Unemployment.

Down: 1 Perspicacity; 2 Run; 3 Tawdry; 4 Valueless; 5 Leave; 6 Intermittent; 7 Sense; 10 Petroleum; 13 Debut; 14 Joyful; 16 Again; 20 Gay.