General:
* Large
* Massive
* Imposing
* Majestic
* Gentle
* Powerful
* Sturdy
* Graceful (despite their size!)
Appearance:
* Brown
* Tawny
* Antlered
* Long-legged
* Shaggy
* Slender
* Broad-shouldered
* Thick-necked
Behavior:
* Solitary
* Shy
* Curious
* Territorial
* Protective
* Alert
* Wary
Other:
* Ancient
* Primitive
* North American
* Woodland
* Unique
* Extraordinary
* Unusual
* Wonderful
For a humorous or lighthearted tone:
* Goofy
* Clumsy
* Silly
* Wacky
* Awkward
For a dramatic tone:
* Fearsome
* Mighty
* Wild
* Untamed
* Rugged
Ultimately, the best adjectives to describe a moose will depend on the context and the specific characteristics you want to highlight.