Words from
express
    definitely stated; not merely implied.
    
    Source: Children of Ruin - Novel by Adrian Tchaikovsky
    
    Usage Example: They have been given express approval to proceed.
    
  preclude
    prevent from happening; make impossible.
    
    Source: Children of Ruin - Novel by Adrian Tchaikovsky
    
    senescence
    the condition or process of deterioration.
    
    Source: Children of Ruin - Novel by Adrian Tchaikovsky