1. 不知足的：insatiably 不知足地 | insatiate 不知足的 | inscape 构成要素

2. 不满足的：satiation 充分满足,饱享 | insatiate 不满足的 | satiety 满足,厌腻

3. 永不满足的：a flexible exchange rate:弹性外汇汇率,(floating exchange rate: 浮动汇率) | insatiate:永不满足的 | baby boomer: 生育高峰期出生的人

4. 不知足的 (形)：insatiably 不知足地; 贪得无厌地 (副) | insatiate 不知足的 (形) | inscribe 刻; 题写; 雕; 印 (动)

adj

1. impossible to satisfy

e.g. an insatiate appetite
an insatiable demand for old buildings to restore
his passion for work was unsatiable

Synonym: insatiableunsatiable