However, depending on the meaning you want to convey, you can use various prefixes to create new words with different meanings:
* Il-: Meaning "not" or "opposite of"
* Illegal: Not permitted by law.
* Un-: Also meaning "not" or "opposite of"
* Unlawful: Against the law.
* Extra-: Meaning "outside of" or "beyond"
* Extralegal: Existing outside of the law.
* Pre-: Meaning "before" or "in advance of"
* Prelegal: Before or in preparation for a legal matter.
* Semi-: Meaning "partly" or "half"
* Semilegal: Partially legal, or having a questionable legality.
* Para-: Meaning "beside" or "alongside"
* Paralegal: A person who assists lawyers.
The specific prefix you use will depend on the context and the specific nuance you want to express.