/ ɪgˈnɔː(r); NAmE / verb [ vn ]
1.
to pay no attention to sth
SYN disregard :
He ignored all the 'No Smoking' signs and lit up a cigarette.
I made a suggestion but they chose to ignore it.
We cannot afford to ignore their advice.
2.
to pretend that you have not seen sb or that sb is not there
SYN take no notice of :
She ignored him and carried on with her work.
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WORD ORIGIN
late 15th cent. (in the sense be ignorant of ): from French ignorer or Latin ignorare not know, ignore, from in- not + gno- , a base meaning know. Current senses date from the early 19th cent.