unspeakable
adj. 无法形容的；不能以言语表达的；坏透了的
例句
The pain is unspeakable.
这种痛苦是无法形容的。
《柯林斯英汉双解大词典》
The judge described the offences as nauseating and unspeakable.
法官把这些罪行描述为“令人作呕、难以言表”。
He told the kaiser that a war between Britain and Germany would be an "unspeakable calamity".
他告诉恺撒，英国和德国之间的战争将会是一场“难以言状的灾难”。
