Adjektive
tough [ tougher ; toughest ]
cruel [ crueler/crueller ; cruelest/cruellest ]
harsh [ harsher ; harshest ]
merciless [ more merciless ; most merciless ]
cruelest [ crueler/crueller ; cruelest/cruellest ]
uncompassionate [ more uncompassionate ; most uncompassionate ]
obdurate [ more obdurate ; most obdurate ]
crueler [ crueler/crueller ; cruelest/cruellest ]
acute [ more acute/acuter ; most acute/acutest ]