verb
    
    Retain the receipt in case you wish to exchange the merchandise
    
    
    
    
    
    
    
    
    
    
    
    We have retained a caretaker to look after the estate
    
    
    
    
    
    
    
    
    
    
    
    This type of soil retains little water
    
    
    
    
    
    
    
    
    
    
    
    As he aged, he found it increasingly difficult to retain even the simplest information such as names and dates