<p>What is the correct phrase, “ignorant of”, “ignorant to”, “ignorant about”?</p>
<p>Example, he was ignorant of/to/about/etc. the effect of alcohol on his liver.</p>
<p>I think the best choice is “ignorant of,” but I think “ignorant about” also works in some cases.</p>
<p>yep, its ignorant of and ignorant with.</p>
<p>“ignorant of” is by far the most used form.</p>