Definition of unruffled adjective from the Oxford Advanced Learner's Dictionary

 

unruffled

 adjective
adjective
BrE BrE//ʌnˈrʌfld//
 
; NAmE NAmE//ʌnˈrʌfld//
 
 
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(of a person) calm synonym unperturbed He remained unruffled by their accusations. Emily appeared quite unruffled.
See the Oxford Advanced American Dictionary entry: unruffled