Marble
Both words in one sentence
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Pinkie Pie's younger sister Marble Pie is even shyer, sporting Peek-a-Bangs over her eye and never saying anything other than a quiet, meek, "Mm-hmm".
Source: Hollywood Personality Disorders -
Pinkie is talkative and outgoing, while her twin sister Marble is quiet and bashful.
Source: Sibling Yin-Yang - Pinkie Pie's youngest sister Marble Pie in My Little Pony: Friendship Is Magic is so shy, she never says anything (except a quiet "mm-hmm"), leading Pinkie to do almost all of the talking for her.
Source: Voice for the Voiceless
Cite this Source
Quiet and Marble. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/marble/quiet
Marble & Quiet. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/marble/quiet>.
Quiet or Marble. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/marble/quiet.
Google Ngram Viewer shows how "marble" and "quiet" have occurred on timeline