dastardly
das·tardly
adjective
1.
- “the unprovoked and dastardly attack by Japan on...December 7th” F.D. Roosevelt
Origin
From dastard + -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.