la raison

Meaning in English

Raison primarily means “reason” in the sense of:

• a cause or explanation for something (the reason why),
• a motive/ground for acting (a reason to do something),
• rationality / the faculty of reasoning (especially in more philosophical or formal contexts).

Common translations depending on context:

• reason, cause, grounds, motive
• reasoning, rationality (in set expressions)

Multiple meanings / main uses

1. Cause / explanation

   • la raison de son absence = the reason for his/her absence
   • pour quelle raison ? = for what reason?

2. Justification / grounds

   • Tu as raison. = You’re right. (idiomatic use: “to have reason” = “to be correct”)
   • avoir des raisons de… = to have reasons to…

3. Human reason / rational faculty (more formal)

   • la raison humaine = human reason
   • perdre la raison = to lose one’s mind (literally “to lose reason”)

Word parts / structure

• raison is a simple noun (not a compound).
• It comes historically from Latin ratio (idea of calculation, reasoning, explanation), which is why it connects both to “cause” and to “reasoning.”

French synonyms (depending on meaning)

• cause (cause)
• motif (motive)
• explication (explanation)
• justification (justification)
• fondement / bien-fondé (grounds / well-foundedness)
• logique (logic, in the sense of rational coherence)
• (for “rational faculty”) raisonnement (reasoning), rationalité (rationality)

French antonyms (if applicable)

• For “reason/rationality”: déraison, irrationalité, folie (madness), démence (dementia/madness)
• For “being right” (avoir raison): avoir tort (to be wrong)