What is another word for most unimpressible?
Pronunciation: [mˈə͡ʊst ˌʌnɪmpɹˈɛsəbə͡l] (IPA) 
The phrase "most unimpressible" indicates a person or thing that is difficult to impress or that doesn't easily show a reaction to outside stimuli. Synonyms for this phrase include "unresponsive," "unruffled," "impervious," "stoic," "unfeeling," and "insensitive." All of these words capture some aspect of a lack of reaction or emotional response, whether through a natural disposition or through a conscious choice to remain indifferent. Using any of these synonyms can help add variety and nuance to your writing, especially when working in fields such as psychology, medicine, or sociology.
