noun, noun or participle which takes 'suru', transitive verb, noun which may take the genitive case particle 'no'
Refers to taking pride in one's own achievements, possessions, or qualities, often with a nuance of showing off or bragging. Can be used both positively and negatively depending on context.
彼は自分の新車を自慢している。
He is boasting about his new car.
これは私の自慢の料理です。
This is my proud dish (the dish I'm proud of).
自慢話ばかりする人は嫌われる。
People who only talk about their own accomplishments are disliked.