1. containing or consisting of flint; very hard like flint
2. showing no emotion or sympathy; stern and unyielding

Examples

• The hikers struggled to climb the flinty mountainside.
• Her flinty stare made it clear she would not change her mind.
• The old judge was known for his flinty demeanor in the courtroom.
• They built their house on flinty ground that was difficult to excavate.
• His flinty heart showed no mercy for those who broke the rules.
• The flinty soil made farming nearly impossible in that region.
• She gave him a flinty look when he arrived late again.