Silentese noun, adjective (silent + suffix –ese, like in Chinese, Japanese, Portuguese) – the language of silence; it may include paralingustic signs, gestures, mimicry and facial expressions.
He didn't say anything. – Why, he spoke eloquently, but it was Silentese, the most difficult language to study and understand.
We are working on Silentese-English dictionary. It will include those
concepts for which now we have no words in our dictionaries. We need to translate them into new English words.