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imperturbation

[im-per-ter-bey-shuh n]
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noun
  1. freedom from perturbation; tranquillity; calmness.
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Origin of imperturbation

First recorded in 1640–50, imperturbation is from the Late Latin word imperturbātiōn- (stem of imperturbātiō). See im-2, perturbation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for imperturbation

equanimity, coolness, stillness, calmness, serenity, calm, tranquility, peace, quiet, patience, restraint, silence, lull, quietude, composure, quietness, peacefulness, repose, hush, sedateness