relentless
re·lent·less
adjective
1.
not to be placated or appeased or moved by entreaty
- “grim determination”
- “grim necessity”
- “Russia”
- “;”
- “;”
2.
Origin
From relent + -less.
Related words
Word family
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.