Definition of "co-operation"

"Pray," said she, "keep any thing like sentiment for Allerton. I am not the least afraid that you will have too much. But one thing I beg to observe—I shall expect active co-operation on your part. You are clever enough if you exert yourself, and that is what people usually do when it is for themselves."

1838 (date written), L[etitia] E[lizabeth] L[andon], chapter III, in Lady Anne Granard; or, Keeping up Appearances. […], volume I, London: Henry Colburn, […], published 1842, page 24

“I have tried, as I hinted, to enlist the co-operation of other capitalists, but experience has taught me that any appeal is futile that does not impinge directly upon cupidity. … .”

1913, Robert Barr, chapter 4, in Lord Stranleigh Abroad‎

Although Chiang Kai-shek was released without publicly acceding and Chang Hsüeh-liang was technically punished, in effect the dramatic incident was the precursor to the easing of the war against the Communists and to the eventual co-operation of the latter in the defense against Japan.

1968, “CHINA”, in Encyclopedia Britannica, volume 5, page 592, column 2

Note: Under the Antarctic Treaty of 1959 all territorial claims are held under abeyance in the interest of international co-operation for scientific purposes.

1985 , John Bartholomew & Son Limited, “Antarctica”, in The Times Atlas of the World, 7th comprehensive edition, Times Books Limited, plate 123

Now the co-operation is set to go one step further. 'We'll be training NYMR [North Yorkshire Moors Railway] staff in basic NR [Network Rail] competencies and awarding Sentinel licences so they'll be able to work as contractors on NR's behalf and we won't be so dependent on people travelling out from Middlesbrough' says Mr Gee.

2019 October, James Abbott, “Esk Valley revival”, in Modern Railways, page 78