* Formal: Despite his initial shyness, John's loquacity blossomed once he found a topic that interested him.
* Informal: Her loquacity at the dinner party was almost unbearable, but everyone seemed to be enjoying her stories.
* Sarcastic: He was known for his loquacity, often talking for hours on end about the most mundane topics.
Let me know if you would like to see more examples or have a particular context in mind!