SOLUTION TO PRIZE CROSSWORD No 15,503:

ACROSS: 1 Worldly-wise. 9 Startup. 10 Sincere. 11 Tot. 12 Unhitch. 13 Early on. 14 Err. 15 Tepid. 17 Drool. 18 Spoof. 20 Tryst. 22 Ape. 24 Oregano. 25 Launder. 26 Una. 27 Clavier. 28 Road hog. 29 Trepidation. DOWN: 1 Weather forecast. 2 Rat-a-tat. 3 Depth. 4 Yesterday. 5 Ignored. 6 Every now and then. 7 Assume. 8 Fennel. 16 Potpourri. 18 Scorch. 19 Fragile. 21 Tsunami. 23 Enrage. 25 Larva.