10 examples of dull
           
        
    1
    
        a dull fire or lamp; a dull red or yellow; a dull mirror.
    
    2
    
        a dull story or sermon; a dull occupation or period
    
    3
    
        a dull day
    
    4
    
        muffled drums
    
    5
    
        the muffled noises of the street
    
    6
    
        muted trumpets
    
    7
    
        never met anyone quite so dim
    
    8
    
        he was either normally stupid or being deliberately obtuse
    
    9
    
        dumb officials make some really dumb decisions
    
    10
    
        worked with the slow students