imperturbable
/ˌɪmpəˈtɜːbəbl/adjective
- unable to be upset or excited; calm不受打搅的, 不易激动的, 冷静的, 沉着的：
an imperturbable tranquillity.
一种打不乱的宁静。
派生词
imperturbability
nounimperturbably
adverb词源
late Middle English: from late Latin imperturbabilis, from in- 'not' + perturbare （see PERTURB）.