Artificial intelligent assistant

muable

muable, a. Obs.
  Also 4 muuable.
  [a. OF. muable:—L. mūtābilem: see mutable a.]
  Mutable, changeable, variable.

c 1374 Chaucer Boeth. iv. Pr. vi. 104 (Camb. MS.) Alle the progression of Muable nature..taketh his causes..of the stablenesse of the dyuine thowght. 1390 Gower Conf. III. 295 Fortune hath evere be muable And mai no while stonde stable. 1481 Caxton Myrr. i. xiii. 42 Thus ben not the sciences muable but alleway ben estable and trewe.

Oxford English Dictionary

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