What is the definition of adominable?

"Adominable" is not a recognized word in the English language. It is likely a misspelling of "abominable," which means:

* Extremely unpleasant or repulsive: "The smell in the room was abominable."

* Morally very bad: "His behavior was abominable."

If you meant to write "abominable," the definition applies. If you meant to write something else, please clarify your query.