It is an adjective.
Meaning : very disgusting i.e. thoroughly unpleasant and displeasing.
Root of the word : omen = a sign, min/men/ment = mind
Synonyms : detestable, loathsome, abhorrent, offensive, detestable
Antonyms : likeable,a lluring, appealing, delightful, desirable, enjoyable, lovable, pleasant, sweet, wonderful, adorable
abominably - adverb
1)Child labour is an abominable custom.
2)Nowadays abominable treatment of prisoners has become an urgent topic be discussed.
3)The industries have become abominable, including most popular ones.
4)He is convicted for the abominable crime he had committed in his neighbours house.