How to find: Boldest font readable at a small size?

Question

I'm not sure how to communicate this to the various font search engines online. I want something that is going to be extremely bold, like as bold as possible, so bold it almost spills out of the glyph. But extremely readable at a regular copy size (12pt Arial).

I've tried

• bold
• sans-serif
• readable
• poster
• display

But I feel like I am missing something obvious to search for just from not having much industry knowledge

Answer 1

Fat fonts, Wide fonts, Extended fonts, Expanded fonts

If you are looking for legibility at small size, Google "maximum x-height fonts".

Tusker Grotesk is one of the results, this capture is at 11pt according to myfonts.

Answer 2

Generally, weights thicker then 'bold' are either called 'extra bold', 'black' or 'heavy', so look up any family that would include these super bold weights. One that I have used extensively is Axiforma which includes these things.