无信心 meaning in English

ungodliness/unholiness
unholiness

If he loses all the faith
输到全无信心，一蹶不振
People will assume that he is crude , or anxious to be “ different ” at all costs ? or a desperate failure
人们会认为他粗俗无礼，或是急切地、不惜一切代价地想"与众不同/标新立异" ? ?即是对自己全无信心。
The sensitivity of even the best instruments was a factor of 1 , 000 too low to pick up hypothesized types of dark particles
在1994年2月召开的第一届研讨会上，与会者对地球上实验室内的粒子探测器能否记录到暗物质，几乎是全无信心。
In early 2006 , yuen told leung that she was not confident in passing the mathematics examination in the hkcee , and requested leung to impersonate her and sit for the examination
去年初，袁向梁表示她对取得中学会考数学科的及格并无信心，遂要求梁冒充她参加有关考试。