taciturnity

The state or character of being taciturn; paucity of speech; disinclination to talk.

In Scots law, a mode of extinguishing an obligation (in a shorter period than by the forty years’ prescription) by the silence of the creditor, and the presumption that, in the relative situations of himself and the debtor, he would not have been so long silent had not the obligation been satisfied.

Habitual silence, or reserve in speaking.

The trait of being taciturn.

the trait of being uncommunicative; not volunteering anything more than necessary