* Inconspicuous: Meaning "not easily noticed or attracting attention."
* Unconspicuous: Meaning "not easily noticed or attracting attention." (Similar to "inconspicuous")
* Preconspicuous: This is a less common prefix, but it could mean "noticeable beforehand" or "remarkable in advance."
* Overconspicuous: This prefix emphasizes the idea of being excessively noticeable or attention-grabbing.
The best prefix to use will depend on the specific context and the meaning you want to convey.