taciturnity

noun taciturnity

• dead air — the loss or suspension of the video or audio signal during a television or radio transmission.
• inarticulateness — lacking the ability to express oneself, especially in clear and effective speech: an inarticulate public speaker.
• iron curtain — (sometimes initial capital letters) a barrier to understanding and the exchange of information and ideas created by ideological, political, and military hostility of one country toward another, especially such a barrier between the Soviet Union and its allies and other countries.
• laconism — laconic brevity.
• muteness — silent; refraining from speech or utterance.