Synonyms and related words :
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