adjective
    
    maturer; -est
    
    [or more ~; most ~]
    
    having or showing the mental and emotional qualities of an adult
    
    
    
    
    
    
    
    
    
    having a fully grown or developed body :grown to full size
    
    
    
    
    
    
    
    
    
    
    
    
    
    having reached a final or desired state
    
    
    
    not young :middle-aged or older
    
    
    
    
    
    based on careful thought
    
    
    
    
    
    showing the highest level of skill that a person develops
    
    
    
    finance :having reached the time when an amount of money (such as money for a government bond or an insurance policy) must be paid :due for payment
    
    
    
    verb
    
    -tures; -tured; -turing
    
    [no obj] :to become mature: such as
    
    to become fully developed in the body and mind
    
    
    
    
    
    to continue developing to a desired level
    
    
    
    
    
    c finance :to become due for payment