unalterable

英 [ʌn'ɔːlt(ə)rəb(ə)l; ʌn'ɒl-] 美[ʌn'ɔltərəbl]

• adj. 不能改变的；坚定不移的

1. not capable of being changed or altered;

"unalterable resolve"

"an unalterable ground rule"

2. of a sentence; that cannot be changed;

"an unalterable death sentence"

3. remaining the same for indefinitely long times