The ability to repel; the characteristic of repelling. (noun)
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Use "repellency" in a sentence
"Hitchens reminded them of what they secretly burned to be -- back when they were fresh out of the J-school manufacturing system -- if only they could write as beautifully, read as deeply, drink as successfully, remember as accurately, fight as gleefully, and reject the daily bromides with such unerring and passionate repellency."
"There are other unknowns: Almost no research has been done on whether the dispersants will undermine the water repellency of birds, which is essential for regulating their body temperature."
"DENVER -- More than 1,000 ducks found dead around Front Range treatment plans likely died when chemicals in the water caused their feathers to lose water repellency."