Ignorant Of: Standard Pattern
Ignorant Of: Standard Pattern records a directly documented English construction and keeps guidance bounded to the evidenced pattern rather than turning one attested complement into a universal prohibition.
Use “ignorant of” to identify a fact or situation that someone does not know about.
Key details
Choose the right form
| Meaning / situation | Form / construction | Decision |
|---|---|---|
| fact, situation, or information someone does not know | ignorant of + noun/gerund | Use the documented “of” pattern. |
| topic discussed more broadly | ignorant about + topic | “About” is also documented, so “of” is not the only possible complement. |
Quick tests
Meaning / construction test
Does the complement name a fact or situation the person lacks knowledge of?
If yes: Use “ignorant of.”
If no: Consider “ignorant about” when the sentence is framed around a broader topic.
Caveat: Cambridge also documents “ignorant about”; this guide records an attested pattern rather than declaring “of” universally mandatory.
Examples
He was ignorant of the change in procedure.
“Of” introduces the fact he did not know.
They remained ignorant of what had happened.
The clause names the unknown situation.
She was ignorant of the risks involved.
The complement identifies information she lacked.
Further guidance
Construction
Use “ignorant of” to identify a fact or situation that someone does not know about.
Style Boundary
Cambridge also documents “ignorant about,” so this page records a standard attested pattern without presenting “of” as the only possible complement.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- ignorant — Cambridge Dictionary (opens in a new tab)Cambridge University Press & Assessment · Direct learner-dictionary evidence for the adjective construction “ignorant of.”