そんな言葉じゃ言い表せない。の英語

Like is hardly the word.

It is indescribable no matter what words are used.

This cannot be got across with words.

As far as I know, there is no such word.

No two words are identical in meaning.

That cannot be expressed in words.

You should not use such rude language.

This word does not have any such meaning.

Words cannot express it.

Words fail me.

Expressions through words won't come out promptly.

Words failed me at the last minute.

From now on, I will not use that word.

I may have said something to that effect, but I can not have used such words.

The word is improper for the occasion

The expression is unparliamentary.

So far as I know, there is no such word.

As far as I know, there is no such word.

I don't know how to say it.

What kind of talk is that?[!]

of something, to be inexpressible in words

Words fail right when you need them.

My gratitude is beyond my power of expression.

Mere words are not enough.

I won't fall for your [his] sweet talk [honeyed words].

The word does not convey such a meaning.

of something, being completely inexcusable

So far as I know, there is no such word.

As far as I know, there is no such word.

an unmentionable word