Words from
facetious
    treating serious issues with deliberately inappropriate humor; flippant.
    
    Source: Zen and the Art of Motorcycle Maintenance - Robert M. Pirsig
    
    bracing
    giving strength or support; invigorating.
    
    Source: Zen and the Art of Motorcycle Maintenance - Robert M. Pirsig
    
    bluff
    a cliff or high bank, especially one that is steep and perpendicular.
    
    Source: Zen and the Art of Motorcycle Maintenance - Robert M. Pirsig
    
    gibbous
    describes the phase of the moon when it is more than half illuminated but not yet full.
    
    Source: Zen and the Art of Motorcycle Maintenance - Robert M. Pirsig
    
    intimation
    an indirect suggestion or hint.
    
    Source: Zen and the Art of Motorcycle Maintenance - Robert M. Pirsig