unbendable

1. Firm convictions; a firm mouth; steadfast resolve; a man of unbendable perseverence; unwavering loyalty.
   坚定的信念；口风严的；坚定的决心；坚忍不拔的男人。

adj

1. marked by firm determination or resolution
   1. firm convictions
   2. a firm mouth
   3. steadfast resolve
   4. a man of unbendable perseverence
   5. unwavering loyalty

   Synonym:    firmsteadfaststeadystiffunfalteringunshakableunwavering