1. Aloof
Meaning -/əˈluːf/ - not friendly or interested in other people
Example -The dog was aloof: she came to you on her own terms.
2. Belligerent
Meaning -/bəˈlɪdʒərənt/ - aggressive and unfriendly
Example -His belligerent attitude drove me up the wall.
3. Big-headed
Meaning -/ˌbɪɡ ˈhedɪd/ - arrogant, too proud
Example -He's handsome but also big-headed, which puts me off.
4. Callous
Meaning -/ˈkæləs/ - not caring about others' feelings, pain or problems
Example -The headmaster was callous and disregarded the feelings of the students.
5. Cantankerous
Meaning -/kænˈtæŋkərəs/ - often angry; always complaining
Example -I'm so sick of her! She is so cantankerous! She is never pleased!