* Formal: The dutiful soldier followed orders without question.
* Simple: My dutiful dog always sits by the door when I'm getting ready to leave.
* Figurative: The dutiful river flowed relentlessly towards the sea, carving its path through the landscape.
* With a hint of irony: He was always the dutiful son, never questioning his parents' decisions.
The word "dutiful" often implies a sense of obligation or responsibility. It can be used to describe both people and things.