This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. The property of being shallow.

n. Quality or state of being shallow.

n. The character of being shallow; lack of depth or profundity, either literally or figuratively; superficiality: as, the shallowness of a river; shallowness of mind or wit.

n. lack of depth of knowledge or thought or feeling

n. the quality of lacking physical depth

"So that the magnitude of my shallowness is apparent, let me note before I say anything else, that even from our perch above, you could see what a handsome guy he is-we should all look so good at 71."

depth   

shoalness    depthlessness   

littleness    laziness    insincerity    superficiality    meanness    heartlessness    pettiness    shiftlessness    vulgarity    profligacy