1. the quality of having little depth from top to bottom
2. lack of intellectual depth or serious thought; superficiality

Examples

• The shallowness of the pond made it safe for young children to wade in.
• We were surprised by the shallowness of the lake near the shore.
• His shallowness became apparent when he only talked about material possessions.
• The shallowness of her analysis disappointed the professor.
• Critics pointed to the shallowness of the movie’s plot.
• The shallowness of the water made navigation difficult for larger boats.
• She was put off by the shallowness of his conversation topics.