The adjective is wild.
Wild
Wuss
Wows
Watch is a synonym for look. It begins with the letter W.
"White Christmas" begins with W.
Wales is a country in the UK that begins with W.
The whooper swan is a European bird. It begins with the letter W.
As far as I know, there is no Greek god whose name begins with W.
There is no mountain that begins with W.
No other letter begins with that letter. The only letter that begins with it is W.
water
Washington