You might be thinking of the word "liter" itself, which is a unit of volume equal to one cubic decimeter.
If you're looking for words that have a similar sound or meaning, you might consider:
* Literature: The body of written works.
* Literal: Exactly as stated; not figurative or metaphorical.
* Literary: Pertaining to literature.
* Literati: People who are well-versed in literature.
Let me know if you have any other words in mind!