How do you say unbreakable in Latin?

There isn't one single perfect translation for "unbreakable" in Latin, as the best choice depends on the context (what is unbreakable, and in what way?). Here are a few options, with slightly different nuances:

* infringibilis: This is probably the closest single-word option, meaning "not able to be broken." It emphasizes the inability to be physically broken.

* infragilis: This means "not fragile," or "strong," implying resistance to breaking.

* firmissimus: This means "very strong" or "most firm," suggesting a high degree of resistance to breaking.

* invincibilis: This means "unconquerable" or "invincible," which could be suitable if the unbreakable nature refers to something's resistance to being overcome or destroyed, rather than just physical breakage.

To choose the best option, consider what is being described as unbreakable. For a physical object, `infringibilis` or `infragilis` would likely be best. For a metaphorical unbreakable bond or spirit, `invincibilis` might be more appropriate.