![Membean Word Root Of the Day show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/025/719/small/membean-word-root-of-the-day.jpg)
Summary: Prefixes are key morphemes in English vocabulary. The prefix *in*, which means "in, on, or not," appears in numerous English vocabulary words, for example: [*in*]ject, [*in*]flux, and [*in*]sane. Prefixes do tend to have different meanings, which can be divined by context, common sense, and the process of elimination.