As an adjective:
* moyen: This is the most common and general translation for "mean" as in "average" or "moderate." For example, "a mean temperature" would be "une température moyenne."
* méchant: This translates to "mean" in the sense of being unkind or cruel. For example, "a mean bully" would be "un méchant tyran."
* vile: This translates to "mean" in the sense of being morally despicable or hateful. For example, "a mean act" would be "un acte vile."
As a verb:
* vouloir dire: This translates to "mean" as in "to signify" or "to indicate." For example, "What does this mean?" would be "Qu'est-ce que ça veut dire?"
* signifier: This is another translation for "mean" in the sense of "to signify" or "to indicate." For example, "This symbol signifies peace" would be "Ce symbole signifie la paix."
Other possibilities:
* moyenne: This translates to "mean" as in "average" when referring to mathematical calculations. For example, "The mean of these numbers is 5" would be "La moyenne de ces nombres est 5."
* moyennement: This translates to "mean" as in "moderately" or "fairly." For example, "He's meanly intelligent" would be "Il est moyennement intelligent."
To get the most accurate translation, it's important to consider the context of the sentence.