relentlessness relentlessly • relentment · · · Info · Definitions · Synonyms · Characters · · relentlessness · · Text Latin · · Script 14 · · Length Definitions · · · (noun) mercilessness characterized by an unwillingness to relent or let up. Synonyms: inexorability, inexorableness. Example: "The relentlessness or their pursuit." · · Noun Definition 1 Synonyms · · · inexorability · · Synonym 1 inexorableness · · Synonym 2 Characters · · e latin small letter e U+0065 l latin small letter l U+006C n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074