ignorance

Từ điển WordNet v3.1 - WordNet Dictionary

noun

the lack of knowledge or education (Freq. 5)
• Derivationally related forms:
ignorant, ignore
• Hypernyms:
content, cognitive content, mental object
• Hyponyms:
ignorantness, nescience, unknowing, unknowingness, inexperience,
rawness, unenlightenment, illiteracy