• Webster's Revised Unabridged Dictionary
    • a Unfailable Infallible. "This unfailable word of truth."
    • ***
Century Dictionary and Cyclopedia
    • unfailable Not capable of failing; infallible.
    • ***
Chambers's Twentieth Century Dictionary
    • adj Unfailable (obs.) infallible
    • ***


In literature:

Yours is an unfailing treasure in the heavens.
"Life and Labors of Elder John Kline, the Martyr Missionary" by John Kline
Its presence lends unfailing charm to its possessor; its loss involves loss of the deepest personal charm.
"Books and Culture" by Hamilton Wright Mabie
For a young man there is no source of safety and wisdom so abundant, pure, and unfailing as the making his mother his confessor.
"The Young Man and the World" by Albert J. Beveridge
With unwearied zeal, steadfast courage, and unfailing patience, he met these difficulties.
"Ontario Teachers' Manuals: History" by Ontario Ministry of Education
And with all this, health, even robustness, and almost unfailing good-humour!
"The Florentine Painters of the Renaissance" by Bernhard Berenson
Be patient, and contentment shall come: a friend more unfailing than a strong arm.
"Everychild" by Louis Dodge
Lily looked at him with a little surprise, but with unfailing love and admiration.
"By the Light of the Soul" by Mary E. Wilkins Freeman
But country-folks know how to value a cool, unfailing spring.
"Round-about Rambles in Lands of Fact and Fancy" by Frank Richard Stockton
By and by the red man ceased to drink of my unfailing rill.
"The Three Brides, Love in a Cottage, and Other Tales" by Francis A. Durivage
The six children who had lived there before us were a source of unfailing interest.
"Mrs. Overtheway's Remembrances" by Juliana Horatia Ewing
It is a still more unfailing feature of the Swiss city, where it is useful in deep snow.
"The Poetry of Architecture" by John Ruskin
What can you do to insure a good and unfailing light for the entire trip?
"The Traveling Engineers' Association" by Anonymous
Very early in his connection with Mocassin he had discovered the unfailing way to make the most of her.
"Boy Woodburn" by Alfred Ollivant
She was unfailingly sweet, but nerveless.
"The Portion of Labor" by Mary E. Wilkins Freeman
Alicia was in front with the Yardleys, dropping her unfailing plummet into the evening's experience.
"Hilda" by Sarah Jeanette Duncan
Beneath the grandeur of his expression is always to be found unfailing good sense.
"History of the Girondists, Volume I" by Alphonse de Lamartine
Springs reputed to be unfailing gradually ceased their cool trickle.
"An Alabaster Box" by Mary E. Wilkins Freeman and Florence Morse Kingsley
Indeed, the match was discussed on numerous ladders, with almost as much interest as the unfailing theme of the damsons themselves.
"The Danvers Jewels, and Sir Charles Danvers" by Mary Cholmondeley
An honest man, and a skilful physician, he deserved and had my unfailing confidence.
"Theory of Circulation by Respiration" by Emma Willard
Peigan Charley had been unfailing.
"The Triumph of John Kars" by Ridgwell Cullum

In poetry:

Thus while we dwell in this low scene,
The Lamb is our unfailing screen;
To him, though guilty, still we run,
And God still spares us for his Son.
"Hymn" by Henry Kirke White
His strength was failing now, but his unfailing
Strong spirit still upbore
And drove him on with courage yet unquailing,
In spite of weakness sore.
"His Mate" by Victor James Daley
Night visits not Thy sky, nor storm, nor sadness;
Day fills up all its blue -—
Unfailing beauty, and unfaltering gladness,
And lover forever new.
"Light of the World! Forever, Ever Shining" by Horatius Bonar
He sang of love, of war, and fame,
At first with harp and voice unfailing;
But with the closing notes there came
Deep tones of woe and mournful wailing.
"The Warning Wail" by Janet Hamilton
He is not desolate whose ship is sailing
Over the mystery of an unknown sea,
For some great love with faithfulness unfailing
Will light the stars to bear him company.
"In Solitude" by Virna Sheard
On and on, unceasing, move the constellations,
Lessening nor increasing since the birth of nations:
Sun and moon unfailing keep their times and seasons,--
But man, unavailing, pleads to thee for reasons.
"A Pagan Reverie" by Frances Fuller Victor

In news:

Providing unfailing operation from ball bearing failure requires looking at the subject the way experts do—with a cold eye on the factors leading to success and failure.
This remarkable, unfailingly intelligent debut film, rooted in the Mississippi Delta's vanishing way of life, tells of the fall-out from one man's suicide on three people.
Unfailing attention to every detail is what ABEC Resorts' condominium resort owners and guests deserve and have come to expect.
I found Estonians to be difficult to get to know, though unfailingly kind when we managed to break down a boundary.
The messages are unfailingly positive.
"I know of no subject, save perhaps baseball, on which the average American newspaper, even in the larger cities, discourses with unfailing sense and understanding".
Viewers are unfailingly advised at the end of commercials that every advertised humorous show is "very funny.".
9 today have unfailingly been presented and accepted as big events.
"Teach us to number our days aright, that we may gain a heart of wisdom…Satisfy us in the morning with your unfailing love, that we may sing for joy and be glad all our days…" (Ps 90:12-13 NIV).
Their inclination to dismiss superstitious behavior is usually followed by an admission of a particular ritual, unfailingly observed.
The mural, sponsored by ArtWorks, was planned due to Tarbell 's unfailing support for the city (and despite his reluctance), say program officials.
In high-stakes heists, as in Hollywood, you'd hope to be able to rely on a blend of exhaustive planning, exquisite plotting and unfailing execution to get the job done.
A TELLING measure of the success of "The Joy of Painting," the hypnotic half-hour show in which the endearingly goofy Bob Ross unfailingly produced a kitschy canvas, was what happened in Holland in 1997.
There are two qualities you can always expect from Arbors' stable of artists: they unfailingly display compatibility and camaraderie, particularly in the front line.
The winsome, unfailingly cheerful local indie-pop crew would much rather talk about Skin Collision Past, the debut full-length LP they're releasing this Friday at Walter's.

In science:

The Penrose tiling [9, 15] is the most famous nonperiodic tiling of the plane and is an unfailing source of beautiful properties and phenomena to be explored .
Diffusive limits on the Penrose tiling
We shall miss his cheerfulness, unfailing good sense, and scientific industry.
The Cluster of Galaxies Surrounding Cygnus A II: New Velocities and a Dynamical Model
Finally, and most important , the author is endlessly grateful for his wife, Teresa, constant and unfailling support.
Supersymmetric Quantum Cosmology --- Shaken not stirred
The author wish to express generic thanks to the referees for a detailed control and numerous constructive suggestions as well he should like to express his deep gratitude to the publishers for their unfailing support.
Interactions and Strings in Higher Order Anisotropic and Inhomogeneous Superspaces and Isospaces