1. most likely to break off in small, thin pieces
Usage: superlative form of flaky
2. most unreliable or unpredictable in behavior
Usage: informal; superlative form of flaky

Examples

• This is the flakiest pastry I’ve ever made.
• The paint on the old barn was at its flakiest near the roof.
• She’s the flakiest person in our group when it comes to showing up on time.
• His flakiest excuse was that he forgot what day it was.
• The flakiest part of the croissant fell onto my plate.
• That’s the flakiest behavior I’ve seen from him all year.