brachylogy, briefness, brusqueness, compactness, compendiousness, conciseness, concision, crispness, curtness, dumbness, economy, economy of words, instantaneousness, laconicalness, laconicism, laconism, littleness, lowness, muteness, obmutescence, pauciloquy, pithiness, pointedness, quietness, quietude, reserve, sententiousness, short time, shortness, silence, sparingness of words, speechlessness, succinctness, summariness, swiftness, taciturnity, terseness, transience, unloquaciousness, untalkativeness, wordlessness