flint
a hard kind of stone; a form of silica more opaque than chalcedony (Freq. 1) • Derivationally related forms: flinty • Hypernyms: silica, silicon oxide, silicon dioxide • Hyponyms: gunflint, firestone, flintstone
showing unfeeling resistance to tender feelings - his flinty gaze - the child's misery would move even the most obdurate heart • Syn: flinty, granitic, obdurate, stony • Similar to: hardhearted, heartless • Derivationally related forms: stone (for: stony), granite (for: granitic)
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