quiescent-- Little Brother Matt

qui·es·cent  (kw-snt, kw-) adj. Being quiet, still, or at rest; inactive. See Synonyms at latent. [Latin quiscns, quiscent-, present participle of quiscere, to rest, from quis, quiet; see quiet.] qui·escence n. qui·escent·ly adv.

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Little Brother Matt is so busy that I wonder if he gets the quiescent periods he need to rejuvenate.