Simple:
* The deer crossed the road in front of my car.
* We saw a family of deer in the forest.
* The deer grazed peacefully in the meadow.
Descriptive:
* The majestic deer stood tall, its antlers glistening in the morning sun.
* The deer's soft eyes gazed at me with curiosity.
* The sound of the deer's hooves on the dry leaves was the only noise in the silent forest.
Figurative:
* He was as graceful as a deer leaping over a fence.
* The city was a concrete jungle, devoid of the peace found in the wild with its roaming deer.
* The young girl was as timid as a startled deer.
You can also use "deer" in compound words like "deerfly" or "deerhound".
Remember, the context of the sentence will determine the best way to use the word "deer".