adjective: Cruel; unfeeling.
- ironclad adjective: 1. Covered with iron. 2. Inflexible, unbreakable, or indisputable.
- flinty Definition: (adjective) Showing unfeeling resistance to tender feelings. Synonyms: granitic, obdurate, stony. Usage: He maintained a hard, careless deportment, indicative of neither joy nor sorrow: if anything, it expressed a flinty gratification at a piece of difficult work successfully executed. Discuss
- flagitious Definition: (adjective) Shockingly brutal or cruel. Synonyms: atrocious, monstrous, grievous. Usage: All faults or defects, from the slightest misconduct to the most flagitious crime, Pantocyclus attributed to some deviation from perfect regularity in the bodily figure. Discuss
- cummingtonite noun: A mineral, otherwise known as magnesium iron silicate hydroxide.