Unruffable

adj

Definitions

Adjective
  1. 1
    imperturbable archaic

    "Sam, with a due allowance for the frailties of human nature, obeyed all his master's behests with that imperturbable good-humour and unruffable composure which formed one of his most striking and amiable characteristics."

Etymology

From un- + ruff + -able.

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