SOLUTION TO PRIZE CROSSWORD No 15,764:

ACROSS: 1 Suction pumps. 8 In-group. 9 Modicum. 11 Third World. 12 Hiss. 14 Engineer. 16 Arnica. 17 Rue. 19 Acuity. 21 Mnemonic. 24 Type. 25 Monumental. 27 Elation. 28 Exploit. 29 Tape measures. DOWN: 1 Sighing. 2 Coordinate. 3 Improper. 4 Nimble. 5 Undo. 6 Puccini. 7 Tittletattle. 10 Miscalculate. 13 Grim Reaper. 15 Rum. 18 End users. 20 Uppsala. 22 Notions. 23 Bounce. 26 Give.