1. 不能和解的：unappealing 不吸引人的 | unappeasable 不能和解的 | unappeasable hunger 难忍的饥饿

2. 不能满足的：unappealing 无吸引力的 | unappeasable 不能满足的 | unappreciated 未被欣赏的

3. 无法平息的：unappealing 无吸引力的 | unappeasable 无法平息的 | unappeasable 不能满足的

4. 无法平息的/不能满足的：unappealing /无吸引力的/ | unappeasable /无法平息的/不能满足的/ | unappreciated /未被欣赏的/

adj

1. not to be placated or appeased or moved by entreaty

    e.g. grim determination
           grim necessity
           Russia's final hour, it seemed, approached with inexorable certainty
           relentless persecution
           the stern demands of parenthood

    Synonym: griminexorablerelentlesssternunforgivingunrelenting