When the antiproton was discovered … it sent a wave of ennui through the physics community. Not that its discovery was unimportant, but on the basis of Dirac's theory, everybody expected it. — Roger G. Newton , The Truth of Science ,

Chauncey and I were keen enough about our aesthetic solution to the ennui of war to try to proselytize others. He organized discussion groups with the crew; I took volunteers to visit landmarks … — Louis Auchincloss , "Atlantic War," in Authors at Sea, ed. Robert Shenk ,

The attendant outside was standing on tennis balls, exercising the soles of her feet, her body swaying back and forth with the ennui of jelly. — Edna O'Brien , New Yorker ,

Thus the days of life are consumed, one by one, without an object beyond the present moment; ever flying from the ennui of that, yet carrying it with us … — Thomas Jefferson , in a letter dated 7 Feb. 1787 Thomas Jefferson: Writings ,

the kind of ennui that comes from having too much time on one's hands and too little will to find something productive to do