stony-heartedly

English

stony-heartedly (comparative more stony-heartedly, superlative most stony-heartedly)

In a stonyhearted manner; pitilessly.
- 1811, Edward Moor, Hindu infanticide: An account of the measures adopted for suppressing the practice of the systematic murder by their parents of female infants, page 17:
  ...their women refused to let their newly-born daughters have access to their milk, and do put them in any way to death: but this practice is not general through all the subdivisions of their tribe, though in several places they do thus stony-heartedly kill them.