/ ˈɪgnərəns; NAmE / noun
[ U ] ignorance (of / about sth) a lack of knowledge or information about sth :
widespread ignorance of / about the disease
They fought a long battle against prejudice and ignorance.
She was kept in ignorance of her husband's activities.
Children often behave badly out of / through ignorance .
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IDIOMS
- ignorance is bliss
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WORD ORIGIN
Middle English : via Old French from Latin ignorantia , from ignorant- not knowing, from the verb ignorare not know, ignore, from in- not + gno- , a base meaning know.