justify/ˋdʒʌstə͵faI; ˈdʒʌstəfaI or ˈdʒʌstIfaI/v [T] justified , justifying , justifies to give a good reason for doing something that other people think is unreasonable 证明〔别人认为不合理的事〕有道理﹔为…辩护: justify (doing) sth How can you justify spending so much money on a coat? 花那么多钱买一件外套﹐你怎么解释呢?