Flinty means hard and unyielding in character. A flinty stare, flinty determination, flinty and cold.
It is admiring and chilling at once, because flint is both useful and unforgiving. Wine writers use it of a mineral quality in white wine, especially chablis. Flint itself is a stone that breaks with a sharp edge, which is why it made the first tools.
1adjectiveflintyHard and unyielding in character.
“She gave him a flinty stare that made it clear she would not change her mind.”
flinty is a quality of hardness.
Proto-Indo-European
*(s)plind- — to split, cleave
Proto-Germanic
*flintaz
Proto-West Germanic
*flint
Old English
flint
Middle English
flynt
English
flint
English, today
flinty
Built from
From flint + -y. flint comes from Middle English flynt, flint, from Old English flint, from Proto-West Germanic flint, from Proto-Germanic flintaz (compare Dutch vlint, flint (“flint, cobblestone”), German Flins, Flint (“flint, pebble”), Danish flint (“flint”)), from Proto-Indo-European (s)plind- (“to split, cleave”) (compare Irish slinn (“slate, shingle”), Ancient Greek πλίνθος), from (s)pley- (“to split”). More at split.
Etymology from Wiktionary, CC BY-SA