What is the definition of enviness?

"Enviness" is not a recognized word in the English language. It's likely a misspelling of "envy," which is a noun and a verb.

Here's the definition of "envy":

Noun:

* A feeling of resentful longing or covetousness for something that someone else has.

Verb:

* To feel or show envy.

For example:

* "He felt a pang of envy when he saw his friend's new car." (noun)

* "She envied her sister's success." (verb)