brittle
b ri tuhl
- n caramelized sugar cooled in thin sheets
 - s  having little elasticity; hence easily cracked or fractured or snapped
                    
                        
                            
brittle bones
glass is brittle - s  lacking warmth and generosity of spirit
                    
                        
                            
a brittle and calculating woman - s (of metal or glass) not annealed and consequently easily cracked or fractured
 
- Forced into asylum, the ex-ruler proved how brittle a person he was when he gunned down his aide in cold blood.
 - The rhetoric was always there but off late the tenor has become hard and brittle.
 - A research has thrown up this startling result that excess soda can cause brittle bones.