Profundity (noun)

1. The quality or state of being profound; deepness; as, the profundity of a subject.
2. The state or quality of being deep or having deep meaning.

Origin:

From the latin word "profundus" meaning deep, from "pro-" meaning before or forward and "fundus" meaning bottom, foundation.

Examples:

1. The professor marveled at the profundity of the student's insights.
2. The novel's themes explored the profundity of human existence.
3. The profundity of his words left a lasting impact on the audience.
4. The profundity of the ocean is truly breathtaking.
5. The profundity of his thoughts was undeniable.