unwilling /ˌʌnˈwiliŋ/ adj.  (［反］willing) 不情愿的，不愿意的：unwilling admiration 勉强的赞美；be unwilling to do sth. 不愿干某事

unwillingness n. [u]不情愿，勉强：Her unwillingness to answer questions undermined the strength of her position.她不愿回答问题，这不利于她所处的形势。Their unwillingness to discuss the problem is quite obvious. 很显然,他们不愿谈论这一问题。