It means that something you don't know can't affect you (good or bad). So, you remain unenlightened. (blissful ignorance)
If you mean 'Ignorant' it means unknowing. e.g. (exempli gratzia) you were ignorant about ignorant before you read this answer!
No you are ignorant
Ignorant mean your laking knowledge.
ignorant
It means that the person is so ignorant that they have no idea what they are ignorant of.
it means: the kind one who is sometimes ignorant. it means: the kind one who is sometimes ignorant.
be ignorant
It's an insult. Ignorant means someone who is -- unaware of, unfamiliar with, inexperience with, lack of knowledge about something. Moron is -- a stupid person.
its just a shorter way to say ignorant
It means: ignorant idiots
You may mean 'ignorant' . It means unknowing about some facet of life.
The superlative of ignorant is "most ignorant."