dishonorable

[ dis-on-er-uh-buhl ]

/ dɪsˈɒn ər ə bəl /

showing lack of honor or integrity; ignoble; base; disgraceful; shameful: Cheating is dishonorable.

having no honor or good repute; unprincipled; disreputable: a dishonorable man.

Also especially British, dis·hon·our·a·ble.

Origin of dishonorable

First recorded in 1525–35; dis-¹ + honorable

1 shameless, false.

2 infamous, unscrupulous, disgraceful, scandalous, ignominious.

dis·hon·or·a·ble·ness, noun dis·hon·or·a·bly, adverb

The Army court-martialed him, sentencing him to 30 days' confinement and a dishonorable discharge.

We Lost Soldiers in the Hunt for Bergdahl, a Guy Who Walked Off in the Dead of Night |Nathan Bradley Bethea |June 2, 2014 |DAILY BEAST
This can lead to an other-than-honorable discharge, a bad-conduct discharge, or a dishonorable discharge.

From PTSD to Prison: Why Veterans Become Criminals |Matthew Wolfe |July 28, 2013 |DAILY BEAST
But it is in terms of past and future positions that what Romney-Ryan are doing really plows new and dishonorable earth.

The Only Big Idea Coming Out of the Romney-Ryan Camp Is the Big Lie |Michael Tomasky |August 21, 2012 |DAILY BEAST
Without your so much as lifting a buffed pinky, those with dishonorable intentions are exposed by seemingly supernatural forces.

Horoscopes: May 8-14 |Starsky + Cox |May 7, 2011 |DAILY BEAST

On Tuesday, the new prime minister, David Cameron, rose in Parliament to close a dishonorable episode with honorable candor.

Bloody Sunday: How the Truth Came Out |Harold Evans |June 16, 2010 |DAILY BEAST
Anne had made it plain to him that she could not, nor would she, help him to play a dishonorable part.

A Coin of Edward VII |Fergus Hume
John was a good business man, Betty thought; he was not dishonest or dishonorable and the Everetts were her old friends.

The Camp Fire Girls in After Years |Margaret Vandercook
That is another peculiar custom of the Earth-men; they consider it dishonorable to harm a captive, or even an unarmed enemy.

The Skylark of Space |Edward Elmer Smith and Lee Hawkins Garby
The shrinking sensitiveness toward the dishonorable and impure loses its edge and departs.

Quiet Talks about Jesus |S. D. Gordon
It is not risking much to affirm the probability of Bradley and most of his crowd having belonged to this dishonorable class.

Andersonville, Volume 3 |John McElroy