to make someone feel slightly frightened or worried about their ability to achieve something
She was not at all daunted by the size of the problem.她丝毫也没有被问题的严重性吓住。
Synonym: discourage(MAKE LESS CONFIDENT)
Idiom
nothing dauntedidiommainly UK不气馁的，再接再厉的
still confident and enthusiastic despite a failure or problem
She was rejected the first time she applied to the university, but, nothing daunted, reapplied the following year and was accepted.她第一次向那所大学递交入学申请虽然遭到了拒绝，但没有气馁，第二年再次递交就被接收了。