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: grim inexorable relentless stern unforgiving unrelenting