wet-blanketry en · NOUN
Etymology
From wet blanket + -ry.
Meanings
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(uncountable) The discouraging attitude of a wet blanket.
Our suggestions that any surviving Americans would be likely to have their hands more than full at home was received as so much wet-blanketry. The Americans, they assured us, would never have allowed such a thing to happen in their country.
1951, John Wyndham, The Day of the Triffids, Harmondsworth: Penguin Books, published 1954, page 202: