conscienceless
cons·cien·ce·less
adjective
1.
lacking a conscience
- “a conscienceless villain”
- “brash, unprincipled, and conscienceless”
- “an unconscionable liar”
Origin
From conscience + -less.
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.