in-,不，非，expressible,可形容的。

1. He felt a sudden inexpressible loneliness.

他突然有种说不出的孤独感。

来自柯林斯例句

2. There is something inexpressible in her which would checkfamiliarity.

她身上有着一种难以名状的气质,使人对她不敢过分随便.

来自《现代英汉综合大词典》

3. I felt an inexpressible relief.

我感到一种说不出的宽慰.

来自《简明英汉词典》

4. In the tranquillity she imparted there was an alloy of inexpressible sadness.

在她传播的这种宁静中,掺杂着一种无法表达的忧郁.

来自辞典例句

5. To death she looked with inexpressible longing.

她渴望自己快快的一死完事.

来自辞典例句