imperturbable /ˌɪmpɚˈtɚbəbəl/ adjective /ˌɪmpɚˈtɚbəbəl/
adjective
Learner's definition of IMPERTURBABLE
[more imperturbable; most imperturbable] formal
: very calm : very hard to disturb or upset沉着的;冷静的;不受烦扰的 -
Although he seems outwardly imperturbable, he can get very angry at times.他虽然外表看起来冷静,但有时也会大发脾气。
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an imperturbable demeanor/disposition泰然自若的风度/性格
— imperturbability
/ˌɪmpɚˌtɚbəˈbɪləti/ noun [noncount] — imperturbably
/ˌɪmpɚˈtɚbəbli/ adverb