Words from
perspicacity
    the quality of having a ready insight into things; shrewdness.
    
    Source: Children of Time - Novel by Adrian Tchaikovsky
    
    wholly
    to the full or entire extent; completely.
    
    Source: Children of Time - Novel by Adrian Tchaikovsky
    
    puerile
    childishly silly and trivial.
    
    Source: Children of Time - Novel by Adrian Tchaikovsky