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。
-
an imperturbable demeanor/disposition泰然自若的风度/性格
— imperturbability
/ˌɪmpɚˌtɚbəˈbɪləti/ noun [noncount] — imperturbably
/ˌɪmpɚˈtɚbəbli/ adverb