From Longman Dictionary of Contemporary Englishflintyflint‧y /ˈflɪnti/ adjective 1 EMOTIONAL literary not showing any emotions SYN hard, icyflinty look/stare Duvall gave him a flinty stare.2 like flint or containing flint
Examples from the Corpus
flinty• In photos from this period, the flinty gaze is not yet apparent.• And-guess what-his flinty heart is melted.• But Avon folks possessed a flinty independence and pride.• The flinty little synthetic poop poop music runs around in my head from last time.• And there is clearly a less flinty side to him.• Pierry derives its name from a stratum of flint in the subsoil which reputedly gives its wine a marked flinty taste.• He walked on across the flinty turf, with the mare's nose at his shoulder, and the hound running ahead.flinty look/stare• The flinty look in Pargeter's face told Dexter that Blanche had struck home in some way. 