* Formal: "His propensity for reckless behavior has landed him in trouble on numerous occasions."
* Informal: "She has a propensity to eat chocolate whenever she's stressed."
* Descriptive: "The new marketing campaign capitalized on the consumer's propensity to spend more during the holidays."
* Technical: "The study found a propensity for people with certain genetic markers to develop diabetes."
* Figurative: "The young artist had a propensity for capturing the fleeting beauty of the moment in her paintings."
Remember, "propensity" refers to a natural inclination or tendency towards something.