Here are some possibilities:
* "-ment": This is a common suffix in English, often used to form nouns from verbs, indicating a state, action, or result. Examples include "movement," "argument," and "payment."
* "-mentum": This is a Latin suffix, also used to form nouns, often with a sense of instrument or tool. Examples include "momentum" and "documentum."
* "-imen" in other languages: It's possible the word you're looking at is from a different language. For example, in Latin, "-imen" can be part of a noun, like "omen" (a sign or portent).
To better understand the meaning of "-imen," please provide more context. For example, what word are you looking at? What language is it from?
With more information, I can provide a more accurate and helpful answer.