What is the in Greek?

The word "in" doesn't have a single direct translation in Greek, as the best choice depends heavily on context. You need to specify what "in" refers to:

* Location: ἐν (en) is the most common preposition for "in" indicating location, but εἰς (eis) can also mean "into."

* Time: ἐν (en) can also be used for "in" referring to a period of time (e.g., "in the morning").

* Means or Manner: ἐν (en) can express "by means of" or "in a certain way."

* Composition or Inclusion: ἐν (en) can mean "in" as part of something.

* Among: ἐν (en) can also mean "among."

To get an accurate translation, please provide the sentence where you'd like to use "in."