The word spirit comes from the Latin spīritus, meaning “breath, breeze, air, life, soul.”
- At its core, it derives from the Latin verb spīrāre, “to breathe.”
- In early usage, breath and life were inseparable—breath was seen as the animating force of living beings.
- From there, spīritus developed a broader sense: not just literal breath, but also life-force, vitality, courage, soul, or consciousness.
When the word entered Old French as espirit and later Middle English as spirit, it carried these same dual meanings—both the literal breath of life and the immaterial essence of a person.
So the etymology shows a progression:
- Breath / breathing →
- Vital principle (life itself) →
- Soul, mind, disposition, supernatural being.
That’s why today “spirit” can mean anything from someone’s mood (“in high spirits”) to the immortal soul or even a ghostly being.