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by hammock 2283 days ago
https://books.google.com/ngrams/graph?content=%22abundance+o...
1 comments
judge2020 2283 days ago
Earliest I found (in terms of books with a year next to them) is from 1689:

https://books.google.com/books?id=4zJWAAAAYAAJ&newbks=1&newb...

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richardfontana 2283 days ago
Specifically for "out of an abundance of caution", in Google Books there begin to be usages around 1911, based on a very quick search. As noted by someone else it's a pretty common phrase among American lawyers.
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