SOLUTION TO PRIZE CROSSWORD No. 15,826:

ACROSS: 1 Viva voce. 5 Dormer. 9 Lonesome. 10 Chilli. 12 Used. 13 Sesame seed. 15 Unwarrantable. 19 Slippery slope. 23 Re-election. 25 Idle. 28 Nestle. 29 Saboteur. 30 Salute. 31 White lie. DOWN: 1 Valour. 2 Venue. 3 Vast. 4 Compeer. 6 Ochre. 7 Malleable. 8 Reindeer. 11 Lava. 14 Swap. 15 Universal. 16 Ray. 17 Trot. 18 G-strings. 20 Rate. 21 Stomach. 22 Degree. 24 Eclat. 26 Dwell. 27 Lout.