* Hetero-: This prefix often signifies "different" or "other" and is used in terms like "heterogeneous" (composed of different elements) and "heterosexuality" (sexual attraction to people of a different gender).
* Dis-: This prefix can indicate a lack of something, or a separation from something. It can sometimes be used to convey the sense of "different," as in "dissimilar" or "discordant."
* Un-: Similar to "dis-," this prefix can suggest a lack of something or a deviation from the norm, indicating something is "different" from the expected.
* Alter-: This prefix means "other" or "different," as in "alter ego" (another self) or "alternate" (different from the original).
It's important to note that the most suitable prefix depends on the specific word you're trying to create and the nuance you want to convey.