What does causa mean?
Causa is a Latin noun meaning a reason, motive, or grounds for action, borrowed into English primarily through legal and scholarly usage rather than through everyday speech. It survives almost exclusively in fossilized Latin phrases: a gift made causa mortis is one given in anticipation of the donor's death, while a causa sine qua non is a condition without which nothing would have happened — an indispensable cause. Philosophers and jurists also speak of causa finalis, the final or purposive cause in Aristotelian thought. The word has a second, unrelated life in Peruvian cuisine, where causa refers to a beloved cold dish of seasoned, mashed yellow potatoes layered with fillings such as tuna, chicken, or avocado and dressed with lime and ají pepper. The Latin root also runs through common English words such as because, accuse, excuse, and recuse, making causa a small window onto how deeply Roman legal vocabulary still shapes modern English. It remains a formal, technical term outside these specialized contexts.
A reason, motive, or grounds for an action, especially in legal or philosophical Latin phrases such as causa mortis and causa sine qua non.
"The court treated the payment as a donatio causa mortis rather than an outright transfer."
Almost always italicized as a foreign term and confined to formal writing.
A Peruvian cold dish of layered, lime-seasoned mashed yellow potatoes with fillings such as tuna, chicken, or avocado.
"She served a causa rellena garnished with black olives and hard-boiled egg."
The anglicized plural causas is standard in general English; the Latin plural causae appears occasionally in very formal legal or classical writing.
"The menu featured three causas, each layered with a different filling."
Every time you say 'because,' you're speaking Latin — it's literally 'by causa.'
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of causa
Causa comes directly from Latin causa, meaning cause, reason, judicial case, or interest. It entered scholarly and legal English largely unchanged as a learned borrowing, preserving its Latin form in fixed phrases such as causa mortis and causa sine qua non. The same Latin root gave rise to the Old French cause, whence the everyday English noun and verb cause, as well as because (originally by cause) and words like accuse and excuse. Its culinary sense in Peru is of independent origin within Spanish-language Peruvian usage.
Related word forms
How causa is actually used
Outside of law, philosophy, and Peruvian cooking, causa is rare in everyday English; using it conversationally will sound pedantic unless you are referring to the dish. In gastronomic contexts it is usually left untranslated.
Easily confused with causa
Cause is the ordinary English noun and verb for something producing an effect, while causa is the Latin term retained only in fixed legal and scholarly expressions.
Casa is Spanish or Italian for house, whereas causa means a reason or grounds (or names the Peruvian potato dish).