Last week’s solution

Across: 1 Incur; 4 Develop; 8 Forlorn; 9 Lunar; 10 Need; 11 Describe; 13 Lair; 14 Stag; 16 Sanction; 17 Also; 20 Mourn; 21 Effendi; 22 Larceny; 23 Roost. Down: 1 Infinitesimal; 2 Curse; 3 Root; 4 Denied; 5 Velocity; 6 Longing; 7 Perfectionist; 12 Pittance; 13 Languor; 15 Lonely; 18 Lingo; 19 Afar.