As an adjective:
* Moyen: This is the most common translation, meaning "average" or "ordinary."
* "C'est un moyen de transport." (It's an average/ordinary means of transportation.)
* Méchant: This means "mean," "cruel," or "wicked."
* "Il est méchant avec les animaux." (He is mean to animals.)
* Vilain: This also means "mean" or "nasty," but can also refer to something being "ugly" or "unpleasant."
* "C'est un vilain garçon." (He's a mean boy.)
As a verb:
* Signifier: This means "to signify," "to mean," or "to represent."
* "Ce symbole signifie la paix." (This symbol signifies peace.)
As a noun:
* Moyenne: This means "average" or "mean" in a mathematical sense.
* "La moyenne des notes est de 15." (The average grade is 15.)
To determine the best translation, you need to provide the context of the sentence.