blackguardly
black·guardly
adjective
1.
lacking principles or scruples
- “the rascally rabble”
- “the tyranny of a scoundrelly aristocracy” W.M. Thackaray
- “the captain was set adrift by his roguish crew”
Origin
From blackguard + -ly.
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.