/rɪˈlʌktəns/
noun
an unwillingness to do something:
I accepted his resignation with great reluctance.
[ + to infinitive ] Her reluctance to talk to the press was quite understandable.

adjective
hesitating before doing sth because you do not want to do it or because you are not sure that it is the right thing to do 不情愿的;勉强的
reluctant agreement
勉强同意
~ (to do sth)
She was reluctant to admit she was wrong.
她不愿承认自己有错。
He finally gave a reluctant smile.
他最后露出了一丝无可奈何的微笑。
a reluctant hero (= a person who does not want to be called a hero)
不情愿做英雄的英雄
OPP eager