New American Oxford Dictionary
unperturbed
un per turbed |ˌənpərˈtərbd ˌənpərˈtərbd | ▶adjective not perturbed or concerned: Kenneth seems unperturbed by the news. DERIVATIVES un per turbed ly |-ˈtərbədlē |adverb
Oxford Dictionary
unperturbed
un |per ¦turbed |ʌnpəˈtəːbd | ▶adjective not perturbed or concerned: Kenneth seems unperturbed by the news. DERIVATIVES unperturbedly |-bɪdli |adverb
American Oxford Thesaurus
unperturbed
unperturbed adjective Daniel was unperturbed by the outburst: untroubled, undisturbed, unworried, unconcerned, unmoved, unflustered, unruffled, undismayed, impassive; calm, composed, cool, collected, unemotional, self-possessed, self-assured, levelheaded, unfazed, nonplussed, laid-back.
Oxford Thesaurus
unperturbed
unperturbed adjective Daniel was unperturbed by the outburst: untroubled, undisturbed, unworried, unconcerned, unmoved, unflustered, unruffled, unshaken, undismayed; calm, composed, cool, collected, controlled, unemotional, serene, tranquil, self-possessed, self-assured, poised, level-headed, at ease, placid, {cool, calm, and collected }, unflappable, unflinching, as cool as a cucumber; unfazed, laid-back, together. ANTONYMS perturbed, anxious.
Sanseido Wisdom Dictionary
unperturbed
ù n per t ú rbed 形容詞 かき乱されていない, 平静な .