CRUELLY Copy link • CRUELLYcrudeliter; dure; atrociter; inhumane. [SYN. in CRUEL] very or most cruelly, crudelissime. to treat or use anybody cruelly, crudelitatem suam in aliquo exercere; crudelitatem adhibere in aliquem; most cruelly, ultima crudelitate saevire (in aliquem).