If you ask someone for a little favour, e.g. to close his door whenever he's listening to loud music or television, but this person keeps "forgetting" this, always. What is a term to describe this kind of person?
There are many words that can be used; that person could be forgetful, or that person could be discourteous. It depends on if you want emphasize the cause or the effect.
discourteous (adj.) showing rudeness and a lack of consideration for other people
absentminded (adj.) (of a person or a person's behavior or manner) having or showing a habitually forgetful or inattentive disposition
My thesaurus lists these promising synonyms for absentminded:
- distracted, preoccupied, inattentive