| THICKAS | Dull like a pioneering physicist in audio and his son, say? (5,2,3,6) |
| EXAMPAPER | Quiz the son say ? it tests the standard (4,5) |
| ELECTRO | Like a pioneering 13 broadcast, back to Victoria Coren Mitchell: ace (17) |
| LENE | ___ Hau, pioneering physicist from Denmark |
| EINSTEIN | Albert - - -, pioneering physicist (8) |
| CARRIERFREQUENCY | Wave between audio and infrared |
| VERYLOWFREQUENCY | Wave between audio and infrared |
| TARNISHING | Becoming more dull like a mountain lake? |
| DUSTY | Dull (like a miller?) (5) |
| DEAD | Dull, like a party |
| TARNISH | Dull, like a mountain lake? (7) |
| BLUNT | Dull, like a knife (5) |
| DRAB | Dull like a color |
| CHARACTERLESS | Dull, like a blank sheet of paper? (13) |
| TONEDOWN | Dull, like a very flat note? (4,4) |
| ORDER | Beland Honderich (publisher of the Star from 1966 to 1988) and his son John Honderich (publisher of the Star from 1994 to 2004) are both honoured (Beland, an Officer and John, a Member) in The ___ of |
| KART | Mario ___: Double Dash!! (video game in which Bowser and his son drive a monster truck) |
| FORMBY | Stage name of the "Wigan Nightingale" and his son, also a singer and comedian |
| ASS | "And Moses took his wife and his sons, and set them..." |
| SWAZI | Anglicised name of the southern African people who, under Sobhuza I and his son Mswati II, established a nation now known as Eswatini in the early 19th century (5) |
