* Formal: "The company's inflexible policy regarding vacation time caused a lot of frustration among employees."
* Descriptive: "The old oak tree, with its inflexible branches, stood stoic against the raging storm."
* Figurative: "His inflexible attitude made it impossible to have a productive conversation."
* Comparative: "The new manager was much more flexible than her predecessor, who had been known for her inflexible approach."
* Negative: "His inflexible personality made it difficult to make friends."
You can use "inflexible" to describe something that is unwilling to change, adapt, or bend. It can be used to describe people, policies, rules, and even physical objects.