what does one know
Definition of what does one know
informal
—used to say that someone is wrong about something “She thinks I should take the job.” “What does she know? You should do what you want.”
From the M-W Editors
Word by Word Definitions
: used as an interrogative expressing inquiry about the identity, nature, or value of an object or matter
: often used to ask for repetition of an utterance or part of an utterance not properly heard or understood
: who
: why
: in what respect : how
: used as an interrogative expressing inquiry about the identity, nature, or value of a person, object, or matter
: whatever
: any
: to perceive directly : have direct cognition of
: to have understanding of
: to recognize the nature of : discern
: knowledge
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