pauciloquent
adjective·/ˌpɔː.sɪˈloʊ.kwənt/
Using few words; sparing in speech, often with an air of deliberate restraint. Pauciloquent can be purely economical where taciturn sometimes implies moodiness. Silence as style.
He was pauciloquent at dinner, but when he spoke the sentence arrived finished, like a stone placed exactly.
Etymology
From Latin pauci- “few” + loquens “speaking,” from loqui “to speak.” A Latinate precision for a human habit: brevity made a trait.
Related Words
taciturnquiet, often temperamentally so
laconicbrief to the point of sharpness
reticentreserved; sometimes misunderstood as merely “quiet”
tersenessthe noun-state of the quality