Verb (used with object), : That bout of pneumonia enfeebled him.    From Dictionary.com. 

The plan proceeds expressly on the idea of enfeebling the regular executory power.    From Wordnik.com.  [Thoughts on the Present Discontents, and Speeches, etc.] Reference

Munich has spread above them its enfeebling wings.    From Wordnik.com.  [Alexandr Solzhenitsyn - Nobel Lecture] Reference

Not all-enfeebling sleep, nor tireless months divine.    From Wordnik.com.  [The Seven Plays in English Verse] Reference

The “about” locution is one of the mind-enfeebling verbal tics of our time.    From Wordnik.com.  [Todd Gitlin: Sunday Watch 7-6-08] Reference

It became a creeping disease of the body, enfeebling every function, choking, suffocating.    From Wordnik.com.  [The Shape of Things to Come] Reference

The bewildering disease, thought to originate from a virus, can be enfeebling and is incurable.    From Wordnik.com.  [The Defiant Ones] Reference

He must stamp himself upon the institution, or its enfeebling influence will be stamped upon him.    From Wordnik.com.  [The Atlantic Monthly, Volume 2, No. 14, December 1858] Reference

Occupier — what a nauseating word to hear; what an enfeebling thing to be; what a distorting condition to bear.    From Wordnik.com.  [If You Live In This World, You’re Feeling The Change Of The Guard | ATTACKERMAN] Reference

He, and others, similarly regard cricket's saturated fixture schedule as a classic case of enfeebling the golden goose.    From Wordnik.com.  [Buoyant rugby union gives the English a reason not to emigrate] Reference

And Iranian-supported Hamas has consolidated power in the Gaza Strip, enfeebling rival Palestinians allied with Washington.    From Wordnik.com.  [Weaker Oil May Crimp Iran's Spending] Reference

To wait longer was to take the risk not only of a failing memory but of the motivation flagging, of an enfeebling of the affective power.    From Wordnik.com.  [Ballardian » ‘Le passé composé de J. G. Ballard’: JGB on Empire of the Sun] Reference

Most brigades were "living under enfeebling or depressing conditions", with 900 men packed into overcrowded battle-school barracks built for 135.    From Wordnik.com.  [ANC Daily News Briefing] Reference

Thought of cramping, stinting, impoverishing or enfeebling Us. To shew that it is their only Interest to shew themselves our Friends, to wear away, if possible, the.    From Wordnik.com.  [John Adams diary 36, 17 - 22 November 1782] Reference

On the simple ground of the enfeebling of the Male intellect, I rest this humble appeal to the highest Authorities to reconsider the regulations of Female education.    From Wordnik.com.  [Flatland: a romance of many dimensions] Reference

If toleration proceeds from the enfeebling of religious belief, we ought among various nations to meet with toleration in an inverse proportion to the degree of their faith.    From Wordnik.com.  [The Heavenly Father Lectures on Modern Atheism] Reference

External nature and human nature appeared equally to languish under that enfeebling hot death in the atmosphere, which seemed to wither female beauty in the moment that it ripened.    From Wordnik.com.  [Blackwood's Edinburgh Magazine, Vol 58, No. 357, July 1845] Reference

The translator, throughout his volume, has been highly loyal in spirit toward the great French preacher; but this has not prevented much enfeebling by him of the style of his original.    From Wordnik.com.  [Classic French Course in English] Reference

It was in later days that the habits of a voluptuary, of which his peculiar love of dress might have been slightly symptomatic, produced their effect, in enfeebling a mind made for eminence.    From Wordnik.com.  [Blackwood's Edinburgh Magazine - Volume 54, No. 338, December 1843] Reference

These methods have the effect of enfeebling the gymnoti.    From Wordnik.com.  [Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 2] Reference

Ill health was enfeebling him, destroying his wonted activity.    From Wordnik.com.  [The Story of Commodore John Barry] Reference

This provision was important as a means of enfeebling the barons.    From Wordnik.com.  [A History of the Japanese People From the Earliest Times to the End of the Meiji Era] Reference

Mediaevalism can hardly be called anything but a rather enfeebling dream.    From Wordnik.com.  [Lectures and Essays] Reference

Surely men were born only to provide for the sustenance of the body by enfeebling the mind!.    From Wordnik.com.  [Posthumous Works of the Author of A Vindication of the Rights of Woman] Reference

But his vexatious captivity, and the enfeebling consequences of this wound, dulled his spirit.    From Wordnik.com.  [Tancred Or, The New Crusade] Reference

Was an enfeebling and afflicting of the natural man so necessary to the exaltation of the soul?.    From Wordnik.com.  [Robert Orange Being a Continuation of the History of Robert Orange] Reference

France, where children are subjected to a far more rigid and enfeebling method than in America.    From Wordnik.com.  [Buchanan's Journal of Man, October 1887 Volume 1, Number 9] Reference

Help from without is often enfeebling in its effects, but help from within invariably invigorates.    From Wordnik.com.  [Pearls of Thought] Reference

It was evident that she offered the final but charming illustration of the enfeebling listlessness of Sidon.    From Wordnik.com.  [A First Family of Tasajara] Reference

Great changes had been accomplished by popular movements even during the enfeebling and disheartening reign of George the Fourth.    From Wordnik.com.  [A History of the Four Georges and of William IV, Volume IV (of 4)] Reference

Hunger, however, was far less enfeebling to Gibbie than to one accustomed to regular meals, and he was in no anxiety about either when or what he should eat.    From Wordnik.com.  [Sir Gibbie] Reference

Civilization is tiresome and enfeebling, unless we occasionally give it the relish of a little outlawry, and approach, in imagination at least, the zest of a gypsy life.    From Wordnik.com.  [Oldport Days] Reference