Clue | Source | Date |
---|---|---|
Freely admit a dumped settee proved useful for ages | ||
Proved to be effective over a period (4-6) | ||
Proven over a long period | Universal | 30 Aug 2020 |
Borne out long-term | The Washington Post | 05 Oct 2019 |
Borne out long-term | LA Times Daily | 05 Oct 2019 |
Borne out long-term | ||
*Proven longterm | The Washington Post | 04 May 2017 |
*Proven longterm | LA Times Daily | 04 May 2017 |
*Proven longterm | ||
Proven over a long period | ||
Tried-and-true | ||
Proven over a long period | ||
Lasting for years | ||
Proved through long usage. |