Comparative form of flinty: more flinty(adjective)
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Use "flintier" in a sentence
"It's not fair to compare Oliver to Frost, who had more music and humor in him and a flintier, more compact diction than any poet who's had to follow him out into the woods and fields and wilds of New England."
"The vineyards higher on the hill, like Le Caillerets and Champ Gains, tend to yield somewhat more structured, flintier wines while those lower down, contiguous with B tard, tend to be rounder, though still marked by a mineral note."
"Here's what I think: The real Peggy Olson would be flintier and snarkier."