shallowness (n.)

• absentmindedness
• amateurism
• appearance
• carelessness
• disregard
• distraction
• emptiness
• externality
• flightiness
• flimsiness
• flippancy
• fluffiness
• foolishness
• foreignness
• frivolity
• frivolousness
• frothiness
• futility
• giddiness
• glimmering
• glimpse
• heedlessness
• idleness
• inadvertence
• inadvertency
• inanity
• inattention
• inattentiveness
• inconsideration
• indifference
• levity
• lightness
• manner
• mien
• negligence
• nonobservance
• obliviousness
• openness
• outwardness
• sciolism
• silliness
• slenderness
• slightness
• smattering
• superficiality
• thinness
• thoughtlessness
• triteness
• triviality
• unawareness
• unconsciousness
• unmindfulness
• unwariness
• vacuity
• vanity
• vapidity
• volatility