Unmerciless
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unmerciless — … Useful english dictionary
Un- — [OE. & AS. un ; akin to OFries. un , D. on , OS., OHG., & G. un , Icel. [=o] , [=u] , Sw. o , Dan. u , W. an , L. in , Gr. ?, ?, Skr. an , a . [root]193. Cf. {A } not {In } not, No, adv.] An inseparable prefix, or particle, signifying not; in ;… … The Collaborative International Dictionary of English
