unmerciful
un·mer·ci·ful
adjective
Origin
From Middle English unmerciful, unmercifull; equivalent to un- + merciful.
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.