• Webster's Revised Unabridged Dictionary
    • v. t Unpromise To revoke or annul, as a promise.
    • ***
Century Dictionary and Cyclopedia
    • unpromise To revoke, retract, or recall, as a promise.
    • ***
Chambers's Twentieth Century Dictionary
    • v.t Unpromise to revoke a promise
    • ***


Webster's Revised Unabridged Dictionary
1st pref. un-, + promise,


In literature:

Last year the crop had been good, and this year it did not look unpromising.
"The Dead Command" by Vicente Blasco Ibáñez
And listen to the wind, with its unpromising sounds from the wide and empty desert places!
"Waiting for Daylight" by Henry Major Tomlinson
Yet, at first sight, how unpromising was the enterprise!
"The Story of the Heavens" by Robert Stawell Ball
In view of their unpromising circumstances the people as a rule are surprisingly cheerful.
"Change in the Village" by (AKA George Bourne) George Sturt
The final dressing, two inches of pebble mortar, looked unpromising on account of its coating of white.
"Child and Country" by Will Levington Comfort
This seems unpromising, but the doctor goes, and transmission of messages ensues, heard within the house.
"Somehow Good" by William de Morgan
Unpromising it certainly looked.
"The Wide, Wide World" by Susan Warner
Guillaume felt that he had turned a rather unpromising situation to very good account.
"Captain Dieppe" by Anthony Hope
Again the Colonel proved unpromising.
"Sunlight Patch" by Credo Fitch Harris
Out of such unpromising materials has the painter made a picture that would challenge attention among any.
"Holbein" by Beatrice Fortescue

In poetry:

No bounds being set.
Flaked out and come unpromised,
The tree being life-divine,
Fearing nothing, life-blissful at the core
Within iron and earth.
"Almond Blossom" by D H Lawrence
Against unyielding shores I too have striven,
And won at last like the uprising sea,
And sink to rest beneath a quiet heaven,
After long struggles, a long victory;
But my star vanishes, its light withdrawn,
And darkness falls unpromising of dawn.
"XXVIII. "The insurgent sea sweeps through the barrier"" by Robert Silliman Hillyer

In news:

MOVIE REVIEW- Hunt's no find: Helen's unpromising directorial debut.
It is exciting to discover that Middle Reef has in fact thrived in these unpromising conditions.
Researchers in Ian Osterloh's lab at Pfizer stopped work on developing sildenafil citrate as a therapy for chest pain in men in 1992 following unpromising results in a Phase I angina study.

In science:

Whereas he ultimately decides that appeals to the notion of gauge-invariant observables is promising and that further search for a formal criterion for substantive general covariance is unpromising, both claims are questionable.
Empirical Equivalence, Artificial Gauge Freedom and a Generalized Kretschmann Objection
Ferrer argued that χ annihilation into photons in the GC is an unpromising venture since the DM distribution is not cuspy. A better place to look would be Sagittarius or Draco which have a high M /L. W.
Summary of the XXXIX Rencontres de Moriond
The beyond Einstein inflation probe and B-mode satellite, overcome the unpromising nature of detecting the tensor-to-scalar ratio by including a wider range of multipoles to get a fuller spectrum of the B-mode polarisation signature.
The Tensor Desert
For competing algorithms, we include Early exit (Cambazoglu et al., 2010) which improves upon stage-wise regression by short-circuiting the evaluation of unpromising documents at test-time, reducing the overall test-time cost.
Cost-Sensitive Tree of Classifiers