(definition) by Webster 1913 Tue Jan 10 2006 at 4:50:17

Im`per*turb"a*ble (?), a. [L. imperturbabilis; pref. im- not + perturbare to disturb: cf. F. imperturbable. See Perture.]

Incapable of being disturbed or disconcerted; as, imperturbable gravity.

 

© Webster 1913

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