a.

1. 无知的，不学无术的；没有受教育的
   They are ignorant but not stupid and will learn quickly.

   他们没有受过教育，但并不愚笨，学起来长进会很快。

2. 不知道的[F][（+of/about）][+that]
   He is ignorant of what happened.

   他不知道发生了什么事。

3. 无知造成的；显示无知的
   an ignorant remark

   无知的话

adj.

1. lacking knowledge or awareness in general.
   ▸ (often ignorant of) uninformed about or unaware of a specific subject or fact.
2. informal discourteous.
3. black English easily angered.