Formal:
* An amiable disposition: Describing someone who is generally pleasant and easy to get along with.
* An amiable exchange: A friendly and pleasant conversation or interaction.
Informal:
* A truly amiable chap: Describing a friendly and likable person (often used for a man).
* Had an amiable time with the neighbors: Describing a pleasant and enjoyable experience with others.
Figurative:
* The amiable glow of the fireplace: Using "amiable" metaphorically to describe a warm and inviting atmosphere.
Let me know if you'd like more examples or phrases for a specific situation.