mercilessness

1. Feelings of extreme heartlessness (synset 107521621)
   is a type of: coldheartedness, hardheartedness, heartlessness - an absence of concern for the welfare of others
   same as: cruelty, pitilessness, ruthlessness
2. Inhumaneness evidenced by an unwillingness to be kind or forgiving (synset 104838262)
   is a type of: inhumaneness, inhumanity - the quality of lacking compassion or consideration for others
   subtypes:

   • pitilessness, ruthlessness - mercilessness characterized by a lack of pity
   • inexorability, inexorableness, relentlessness - mercilessness characterized by an unwillingness to relent or let up
   same as: unmercifulness

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