| Set in concrete |
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| Fixed (of a rule) (4,3,4) |
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| Dan has draft for revision? It's fixed (4,3,4) |
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| As flying nail, for example, set in concrete (4-3-4) |
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| Dan has draft to be revised? It's fixed (4,3,4) |
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| Like a strictly enforced rule |
USA Today |
13 Dec 2023 |
| Like a strictly |
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| Fixed and definitive |
The Guardian Quick |
16 Oct 2021 |
| Like a game show’s lightning round? |
Wall Street Journal |
28 Aug 2021 |
| Inviolable, as a rule |
LA Times Daily |
30 Dec 2020 |
| Inviolable, as a rule |
The Washington Post |
30 Dec 2020 |
| Invariable |
Thomas Joseph |
11 Aug 2020 |
| Fixed, as nails? Quickly too! |
The Telegraph Cryptic |
29 Dec 2019 |
| Inflexible, as a rule |
Newsday |
27 Oct 2019 |
| *Inviolable, as rules |
LA Times Daily |
01 Jul 2015 |
| Stringently enforced, as a rule |
USA Today |
14 Feb 2015 |
| Stringently enforced, as a rule |
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| *Inviolable, as rules |
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| Unalterable, as rules |
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| *Inviolable, as rules |
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| Stringently enforced, as a rule |
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| Stringently enforced |
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| Stringently enforced |
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| Binding, as a contract |
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| Inviolable |
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| Rigidly binding |
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| Invariable. |
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| Strict. |
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