brevity (n.)

• briefness
• brusqueness
• compactness
• conciseness
• concision
• crispness
• curtness
• dumbness
• economy
• instantaneousness
• laconicism
• laconism
• littleness
• lowness
• muteness
• pithiness
• pointedness
• quietness
• quietude
• reserve
• shortness
• silence
• speechlessness
• succinctness
• swiftness
• taciturnity
• terseness
• transience