Here are some possibilities:
* "Adiabatic": This is a real word related to thermodynamics, referring to a process where no heat is exchanged with the surroundings.
* "Idiomatic": This means using words or phrases that are specific to a particular language or dialect, often with a meaning that is not obvious from the individual words.
* "A-diotic": This could be a playful or informal way of saying "non-idiotic" or "not stupid."
If you have a specific context where you encountered this word, please provide it, and I might be able to give you a more precise answer.