The correct spelling for "not tells" should be "no tells." The phonetic transcription for this word is /noʊ tɛlz/. The word "no" is pronounced with a long "o" sound and the letter "t" is pronounced with a soft "t" sound. The plural form of "tell" is spelled with an "s" at the end, which is pronounced with a soft "z" sound to form "tells." Therefore, "no tells" means that there are no pieces of information being shared or disclosed.