Translation guide
The English word 'ignorant' can mean lacking knowledge, being unaware, or showing a lack of education. In Japanese, the best translation depends on whether you mean 'not knowing facts,' 'uneducated/uncultured,' or 'willfully ignoring something.' This guide helps you choose the right expression.
He is ignorant of the facts.
To say someone doesn't know something, is uninformed, or lacks awareness of a fact or situation.
The most direct translation for 'ignorant' in the sense of lacking knowledge. Often used in formal or written contexts. Can sound harsh if used directly about someone.
He is ignorant about the issue.
The most natural and common way to say someone doesn't know something. Less harsh than 無知. Use this in everyday conversation.
He is ignorant of that fact.
Literally 'unlearned,' emphasizing lack of formal education or scholarly knowledge. More about being uneducated than simply not knowing a fact.
A strong, literary term meaning 'utterly ignorant' or 'benighted.' Used in formal criticism or philosophical contexts.
the ignorant masses
To describe someone who is uncultured, ill-mannered, or doesn't know how to behave in a social setting.
Means 'uncultured' or 'lacking refinement.' Focuses on a lack of cultural knowledge or good upbringing.
He is ignorant and doesn't know table manners.
Means 'uncouth,' 'unrefined,' or 'tactless.' Often used for someone who doesn't understand social subtleties or is unfashionable.
Literally 'not knowing the world,' meaning naive or ignorant of how society works. Often used for someone sheltered.
To express that someone is deliberately ignoring facts, advice, or a situation.
Means 'to ignore' or 'disregard.' Use this when someone intentionally pays no attention to something they should acknowledge.
He ignored the warning (was willfully ignorant).
Literally 'to pretend not to see,' meaning to turn a blind eye. Implies willful ignorance of something obvious.
Casual term for 'feigning ignorance' or 'playing dumb.' Often used when someone pretends not to know something to avoid responsibility.
In English, calling someone 'ignorant' can be a strong insult. In Japanese, directly saying 無知な人 (ignorant person) can sound very harsh and confrontational. It's often better to soften the statement or use a phrase like あまり詳しくない (not very knowledgeable) unless you intend to be rude.
He's not very knowledgeable in that field.
無知 (muchi) is a noun/adjective meaning 'ignorance' or 'ignorant,' often used in formal or written contexts. 知らない (shiranai) is the negative form of 'to know' and is the most natural way to say 'don't know' in conversation. Use 知らない for everyday situations and 無知 for abstract or formal discussions about lack of knowledge.
He is ignorant (uneducated) but clever.
Sorry for the ignorant question.
She is ignorant of the ways of the world.
He turned a blind eye to the injustice (was willfully ignorant).
He played ignorant.