Last week’s answers:

ACROSS: 1 Base ; 3 Spurious; 9 Riotous; 10 Diets; 11 Overbalances; 13 Lupine; 15 Chaste; 17 Featherbrain; 20 Lasso; 21 Enthuse; 22 Sidesmen; 23 Less.

DOWN: 1 Barn owls; 2 Stoke; 4 Pestle; 5 Riding habits; 6 Oneness; 7 Sash; 8 Combinations; 12 Meanders; 14 Pleased; 16 Recede; 18 Acute; 19 Plus.