pitilessness (n.)
- acuteness
- animality
- atrocity
- barbarity
- bloodlust
- brutality
- callosity
- callousness
- coldheartedness
- coldness
- destructiveness
- extremity
- ferociousness
- fierceness
- force
- furiousness
- hardheartedness
- hardness
- harshness
- heartlessness
- impetuosity
- inclemency
- inhumanity
- insensitivity
- intensity
- malignity
- mercilessness
- mindlessness
- murderousness
- obduracy
- rigor
- roughness
- savagery
- severity
- sharpness
- terrorism
- unmercifulness
- unnaturalness
- unresponsiveness
- vandalism
- vehemence
- venom
- viciousness
- violence
- virulence
