defatigable

“   A few survivors, precariously perched on sill-less windows, survey their double bind looking for perspective and vanishing points, a place to tip themselves over the edge in hopes defatigable winging.”

Fictionaut: Kamikaze Birdsongs

“He doesn't get tired of telling the truth – which explains his in-defatigable nature.”

Paul No. 1 on Amazon.com

“Louis XI—that in defatigable workman, who commenced on so large a scale the demolition of the feudal edifice, continued by Richelieu and Louis XIV to the advantage of royalty, and completed by Mirabeau to the advantage of the people—Louis XI had done his utmost to break up this network of seigneuries which covered Paris, by casting violently athwart it two or three ordinances of general police.”

IV. An Awkward Friend. Book X

“It is withal an in defatigable teller and hearer of base stories.”

Sermons Preached Upon Several Occasions. Vol. IV.

“I did honor to my corps (at least) by keeping an open table during the Rebellion, when provisions were so excessive scarce, an my house during it, the hospital for wounded officers, and my wife the matron from her in, defatigable attention.”

Charlotte Temple, a tale of truth; reprinted from the rare first American edition (1794), over twelve hundred errors in later editions being corected, and the preface restored; with an historical and biographical introduction, bibliography, etc., by Francis W. Halsey.

“Major general Steuben, having under him the in - defatigable patriot and soldier general Nelson, had by this time drawn together a considerable body of militia, inconsequence of the exertion of the governor.”

Internet Archive: Memoirs of the war in the Southern department of the United States