What is another word for "taciturnity"?

Roget's Thesaurus (1911) lists these synonyms for "taciturnity": absence, and, aphonia, aphonous, aphony, bated, between, bite, breath, breathless, bridle, broken, button, cave, childish, close, concealment, costive, costiveness, counsel, cracked, curt, curtness, cut, deaf, drown, dry, dumb, dumbness, dumfounder, dummy, dysphony, escape, faintness, falsetto, few, finger, fish, gag, grave.