| THUNDERCLAP | This former popular variety of begonia is a sudden sound caused by the discharge of atmospheric electrical charge (11) |
| LIGHTNING | Discharge of atmospheric electricity (9) |
| KGB | In the Cold War, a 1kg begonia is found in the Soviet Committee for State Security! (1,1,1) |
| SPOUTS | Blowholes, fountains, gargoyles, jets, nozzles, pipes, teapot tubes etc for the discharge of liquid/water (6) |
| METAL | ___ leaf begonia is the common name for B. metallica (5) |
| EMISSION | The discharge of something, especially gas or radiation (8) |
| LIFE | This Is ___, former popular TV show (4,4) |
| THUNDER | Feared by an astraphobe, a sound caused by the rapid expansion of heated air around a bolt of lightning (7) |
| BOOM | Sound caused by the shock waves of a supersonic aircraft; or, the cry of Britain's loudest bird, the bittern (4) |
| SNORE | Sound caused by the soft palate's vibration |
| YOUR | And 24 down This Is ___, former popular TV show (4,4) |
| ECHO | The repetition of a sound caused by reflection of sound waves (4) |
| ECHOES | Maeve Binchy's second novel; or, sounds caused by the reflections of acoustic waves (6) |
| HIC | Sound caused by a spasm of the diaphragm |
| STROKE | What is a sudden interruption to the supply of blood to the brain (6) |
| ORIENTAL | 'Patty's Plum' is a popular variety of this type of poppy (8) |
| THUD | Heavy dull sound caused by a heavy object |
| ADVENT | A puff atop the discharge pipe is coming (6) |
| SONICBOOM | Sound caused by shock waves |
| HICCOUGH | Involuntary sound caused by spasms (8) |
