RichThesaurus
nonplussed
vs
oblivious (to)
nonplussed
adj
Unsure how to act or respond; bewildered, perplexed.
Unaffected, unfazed; unimpressed.
oblivious (to)
How often have the words
nonplussed
and
oblivious (to)
occurred in a corpus of books?
(source:
Google Ngram Viewer
)