1 lone

2 lonely

3 loneliness

1 lonely

2 solitary

1 pride

2 arrogance

3 conceited

4 proud of sth

1 (coll.) presenting as unfriendly and blunt, but warm and tender inside (loanword from Japanese "tsundere")

1 arrogant

2 haughty

1 obstinately clinging to one's course (idiom)

2 willful

3 one's own way

4 dogmatic

1 outstanding talent (idiom)

2 incomparable artistic merit

3 accomplishment out of the ordinary

1 one who is cut off from others (idiom)

2 one who has chosen to follow a solitary path

3 (can also be an indirect way of referring to an unmarried person)

1 alone in the world (idiom)

1 lone flower admiring itself (idiom); narcissism

2 self-love