taciturn -- Mom and Auntie Mary

tac·i·turn  (ts-tûrn) adj. Habitually untalkative. See Synonyms at silent. [French taciturne, from Old French, from Latin taciturnus, from tacitus, silent; see tacit.] taci·turni·ty (-tûrn-t) n. taci·turn·ly adv.

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Unlike her sisters, Mom is by nature taciturn; so am I, but for some reason when I called her today to say, "Happy Birthday!" we had plenty to say.