ignore
UK[ɪɡˈnɔː(r)]US[ɪɡˈnɔːr]
v
To refuse to take notice of or acknowledge; to disregard intentionally.
v
To reject or dismiss as unworthy of consideration.
Etymology
The verb 'ignore' entered English in the late 15th century from the Latin 'ignorare', meaning "not to know, be unacquainted with, disregard." This Latin term is built from the assimilated negative prefix 'in-' (meaning "not") and the root 'gnarus' (meaning "knowing, acquainted with"), which itself derives from the Proto-Indo-European root 'gno-', the prolific source of knowledge-related words like 'know', 'notice', and 'narrate'. The semantic journey from the literal "not to know" to the modern "to refuse to know or acknowledge" is a classic example of a meaning shift from a passive state to an active, often willful, choice of disregard. Thus, the core logic of the word has evolved from simple lack of awareness to a deliberate act of omission or rejection.
Analysis
The word is a simplex loanword from Latin. It cannot be meaningfully segmented into productive morphemes in modern English spelling without altering the form (e.g., 'gnos' or 'nor' are not standalone morphemes in English).
Examples
It is unwise to ignore the doctor's advice.
He chose to ignore the rude comments and continue with his presentation.
The software will ignore any input that does not match the required format.