>> We have yet to find a word which is completely untranslateable, or a word in one language which could only be translated into another language by means of hundreds and hundreds of words.

Do we? How do you explain the existance of words like "get", "fuck", "buffalo", "dharma", "karma", "tao", "таковам"?

Each of these have numerous meanings, which could individually be translatable in another language with very short phrases, but if you want to translate the general cluster you will need pages and pages in a dictionary I think ...