impalpable
/ɪmˈpælpəbl/adjective
1- unable to be felt by touch触摸不到的：
an impalpable ghost.
触摸不到的鬼魂。
1.1
- not easily comprehended不好理解的, 难以捉摸的：
how would anyone come to a decision about something so impalpable as personhood?
怎么能对人格这样难以捉摸的东西作出定论呢？
派生词
impalpability
nounimpalpably
adverb词源
early 16th cent.: from French， or from late Latin impalpabilis, from in- 'not' + palpabilis （see PALPABLE）.