| Orthodox playwright first to recognise resistance to rapid transit system? |
The Times Cryptic |
07 Jul 2025 |
| Effect formerly regarded as an obstacle to supersonic flight (5,7) |
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| Solid obstruction very quickly passed through (5-7) |
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| Imaginary boundary of speed (5-7) |
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| The increase in drag as a plane approaches 770 mph |
The Times Specialist Sunday |
26 May 2024 |
| Flawless defence, yet speedily broken (5,7) |
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| Threshold of a boom in air travel |
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| *Snapping a whip breaks it |
Wall Street Journal |
22 Jan 2024 |
| Snapping a whip breaks it |
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| It was broken by Concorde (5,7) |
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| Invisible limit of a sense |
Universal |
11 Jul 2022 |
| Effective obstacle that's quickly broken? |
The Telegraph Cryptic |
25 Mar 2020 |
| Invisible impediment in the sky |
LA Times Daily |
02 Jul 2019 |
| Invisible impediment in the sky |
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| Invisible impediment in the sky |
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| What 69 Across broke in October 1947 ... and what you must break nine times to reveal this puzzle's hidden phrase |
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| Reliable fence needs to be approached by high-flyers looking for speed |
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| Reliable fence needs to be approached by high flyers looking for speed |
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| It's responsible for a boom in flying |
The Telegraph Cryptic |
21 Mar 2016 |
| Chuck Yeager broke it |
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| Aviation term. |
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