Verb (used with object) : He murmured a threat as he left the room.    From Dictionary.com. 

His faculties seemed walled up in him, and were unmurmuring in their captivity.    From Wordnik.com.  [Shirley, by Charlotte Bronte] Reference

Do you imagine, because a load is borne with unmurmuring patience, that the weight is gradually lessening and the burden will soon be lifted?.    From Wordnik.com.  [Aunt Judith The Story of a Loving Life] Reference

The brave women of the city were a constant reproach, in their quiet, unmurmuring industry, to the not infrequently faint-hearted and despondent men.    From Wordnik.com.  [Four Years in Rebel Capitals An Inside View of Life in the Southern Confederacy from Birth to Death] Reference

How many subjects had he for unmurmuring gratitude!.    From Wordnik.com.  [The Scottish Chiefs] Reference

The sweet unmurmuring flowers, -- and bade the night.    From Wordnik.com.  [Poems: Descriptive, Dramatic, Legendary and Contemplative, by William Gilmore Simms, Esq. In Two Volumes: Vol. I. I. Norman Maurice, a Tragedy; II. Atalantis, a Tale of the Sea; III. Tales and Traditions of the South; IV. The City of the Silent] Reference

Silent, unmurmuring, she had given her life for nothing and gone.    From Wordnik.com.  [The She Boss A Western Story] Reference

They submit to every thing with unmurmuring sweetness and humility.    From Wordnik.com.  [The Friendships of Women] Reference

She held me in contempt, and yet she clung to me, patiently and unmurmuring.    From Wordnik.com.  [The Wit and Humor of America, Volume VIII (of X)] Reference

He lay unmurmuring for all the tossing of the road over the long miles of the ride.    From Wordnik.com.  [Golden Lads] Reference

It is well to sit still unmurmuring; it is better to march on undiverted and unchecked.    From Wordnik.com.  [Expositions of Holy Scripture : St. Matthew Chaps. IX to XXVIII] Reference

That forcible form of expression describes the completeness of the Psalmist's unmurmuring submission and quiet faith.    From Wordnik.com.  [Expositions of Holy Scripture Psalms] Reference

Her beauty, I fear, will be entirely destroyed; but this, I trust, her good sense will enable her to bear unmurmuring.    From Wordnik.com.  [Lovers and Friends; or, Modern Attachments] Reference

Obedient to their leader's order, loyal, steadfast, unmurmuring to the bitter end, they vanish once and for all from loving eyes.    From Wordnik.com.  [Marion's Faith.] Reference

When the time came, he gave up his apparatus to another and returned to the vitiated air on board, calm, unflinching, unmurmuring.    From Wordnik.com.  [Vingt mille lieues sous les mers. English] Reference

A hopeless task; but they continue at it unmurmuring, giving their bodies without stint, as once they gave their labour, to the fields and the sea.    From Wordnik.com.  [Old Junk] Reference

I'll establish a spirit of trustful happiness and unmurmuring content in this school, if I have to flog every boy in it as long as I can stand over him!.    From Wordnik.com.  [Vice Versa or A Lesson to Fathers] Reference

The next morning, the journey was begun; the army setting forth, unmurmuring, though without half their baggage, and with no present prospect of provisions.    From Wordnik.com.  [The Partisan: A Tale of the Revolution. By the Author of "The Yemassee," "Guy Rivers," &c. In Two Volumes. Vol. II] Reference

Sternly, unremittingly, since the fair July night when Richard had left her nearly five years earlier, she had schooled herself into unmurmuring resignation and calm.    From Wordnik.com.  [The History of Sir Richard Calmady A Romance] Reference

My poor sick folk and my peasants certainly set me an example of unmurmuring resignation; but they know that I at least understand them and their troubles, while there is not.    From Wordnik.com.  [The Country Doctor] Reference

Or stand with smiles unmurmuring by.    From Wordnik.com.  [The Works of Lord Byron. Vol. 3] Reference

Where summer's wave unmurmuring dies.    From Wordnik.com.  [The Complete Poems of Sir Thomas Moore Collected by Himself with Explanatory Notes] Reference

Save that the child unmurmuring drooped.    From Wordnik.com.  [Lilith The Legend of the First Woman] Reference

I was a slave unmurmuring; he hath said.    From Wordnik.com.  [The Works of Lord Byron. Vol. 3] Reference

From a compress'd unmurmuring lip, it broke.    From Wordnik.com.  [Man of Uz, and Other Poems] Reference

We bore unmurmuring! strengthened by the mail.    From Wordnik.com.  [War Poetry of the South] Reference

To bear unmurmuring what stern Time may send.    From Wordnik.com.  [Choice Specimens of American Literature, and Literary Reader Being Selections from the Chief American Writers] Reference

Let me still pray unmurmuring, night and day.    From Wordnik.com.  [Stuart of Dunleath: A Story of Modern Times] Reference

Yet he complains, while these unmurmuring part.    From Wordnik.com.  [The Christian Year] Reference

He lay unmurmuring.    From Wordnik.com.  [Golden Lads] Reference

A sweet, unmurmuring faith.    From Wordnik.com.  [The Hymnal [of the Protestant Episcopal Church in the USA]] Reference

Patient, unmurmuring, even in death.    From Wordnik.com.  [The Poetical Works of Mrs. Leprohon] Reference

"Endure, unmurmuring, each unwelcome toil.    From Wordnik.com.  [The Elegies of Tibullus Being the Consolations of a Roman Lover Done in English Verse] Reference

“Their poverty on souls unmurmuring weigh'd.    From Wordnik.com.  [The Metamorphoses of Publius Ovidus Naso in English blank verse Vols. I & II] Reference

“With mind unmurmuring, all the tedious war.    From Wordnik.com.  [The Metamorphoses of Publius Ovidus Naso in English blank verse Vols. I & II] Reference

When, with unmurmuring lips, he bowed his head.    From Wordnik.com.  [Poems of the Heart and Home] Reference