Ah, one of our all-time favorite patterns and examples: leche, the common Spanish word meaning, “milk.”
Leche is a first cousin of the English lactose via a very interesting pattern: the -ct- to -ch- pattern.
Both come from the same Latin root, lactatio (literally, “suckling.”) The -ct- in that root remained unchanged as it entered English (because it entered via the sophisticated French) but that sound almost always turned into a -ch- sound as Latin evolved into Spanish. Thus the l-ct maps to the l-ch almost exactly.
Many other awesome words follow the same pattern: think octagon/ocho, for example. Some more coming up soon (or see the pattern page linked below).
Suspect and the Spanish equivalent, sospechoso, are easy to identify and obviously the same word, both from the same Latin root, suspectus.
That’s not the interesting part. Rather, as Latin evolved into Spanish, the Latin sound -ct- turned into the Spanish -ch- sound. Think lactose/leche or octagon/ocho.
And suspect falls exactly into this pattern: the English s-s-p-ct maps exactly to the Spanish s-s-p-ch.
The Latin words that began with “cl” changed, pretty consistently, to “ll” as Latin changed into Spanish.
Today’s example of this: the Latin word for “key” was clavis. This became the modern Spanish word for “key”, llave.
There are, however, a few interesting other descendants of clavis, and thus distant relatives of llave. They include:
The Spanish lluvia (for “rain”) comes Latin pluvia for the same — a change that may not be obvious because the -pl- of Latin sometimes became a -ll- in Spanish.
From the same root, we get the sophisticated English word pluvial which means… lots of rain!
The ll-v of lluvia clearly maps to the p-l of pluvial.
The Spanish pudrir, “to rot,” has a surprising connection to the English, foul, a word meaning the same but sadly very underused these days — although still when quoting Macbeth: fair is foul and foul is fair!
Both come from the same Indo-European root *pu, meaning, “to rot.”
But the English one sounds so different because, in the Germanic branch of Indo-European, the p- sound turned into the f- sound. But now in the Latin branch.
Thus the initial f+vowel of foul maps to the initial f+vowel of pudrir.
From the same root are more fun words including defile, putrid, and pus. What wonderful imagery!