The closest thing I can think of is aquatic, hope that helps.
Petrified.
Disestablishmentarianism If you mean a word for nice, delightful is a possibility.
"philía" is a greek word meaning "Love"
Wade. Means to walk in water. Wadi. Arabic for a valley.
spit
Flats
Overcast is a weather word. It describes the sky when it is mostly covered by clouds.
Another word for water that starts with the letter 'O' is oxygen dihydrogen.
If you mean starts with the word "evil" in the title: Evil Ernie, published by Eternity Comics is one.If you mean starts with the word "evil" in the interior/script: ?
... an eskimo pie...
Aquatic
Aqua
what is the word for when a land has been covered with water?
h20
Lord
finish
No it is not.Covered can be an adjective to mean overlaid with an item such as a blanket.It can also be a verb. It is the past tense of the verb to cover.