What is the greek word for cool?

There isn't one single Greek word that perfectly translates to "cool" in all its modern connotations. The closest translations would depend on the specific nuance of "cool" you're looking for:

For "cool" meaning low temperature:

* ψυχρός (psychros): This is the most direct translation for "cold" or "chilly."

For "cool" meaning stylish or trendy:

* μόντε (monte): This is slang, derived from the Italian word "monte," and means "cool" in the sense of "fashionable" or "hip."

* ψαγμένος (psagmenos): This word implies being "sophisticated," "knowledgeable," and "aware" of current trends, thus conveying a sense of "coolness."

For "cool" meaning calm and relaxed:

* ήρεμος (iremos): This word means "calm" or "peaceful."

* χαλαρός (chalaros): This means "relaxed" or "easygoing."

For "cool" meaning impressive or admirable:

* φантаστικός (fantastikos): This means "fantastic" or "amazing."

* τέλειος (teleios): This means "perfect" or "ideal."

Ultimately, the best Greek translation for "cool" will depend on the specific context and the meaning you want to convey.