The Spanish verb 'encolerizar' (meaning 'to anger' or 'to enrage') has a fascinating connection to ancient Greek medical terminology. It comes from the Spanish word 'cólera' (meaning 'anger' or 'rage'), combined with the prefix 'en-' and the verbal suffix '-izar'. The word 'cólera' itself can be traced back to the Latin 'cholera', which came from the Greek 'kholera' (χολέρα), referring to the disease cholera. Going even further back, 'kholera' derived from the Greek word 'khole' (χολή), meaning 'bile'.

This etymology reflects an ancient understanding of emotions and medicine. The Greeks believed that anger and other temperaments were related to bodily fluids or 'humors', with bile being associated with anger. This connection between bile and anger persisted through Latin and into Spanish, where 'cólera' came to primarily mean 'anger' rather than the disease. The addition of 'en-' and '-izar' transformed the noun into a verb meaning 'to make angry' or 'to enrage'.

A simpler and more common related Spanish word is 'cólera', meaning 'anger' or 'rage'. This is the base word from which 'encolerizar' was formed. Another related word is 'colérico', meaning 'angry' or 'hot-tempered'. These words are more frequently used and might be easier for Spanish learners to remember first.

English speakers might recognize the connection to the word 'cholera', the infectious disease, which shares the same Greek root. While the Spanish word evolved to primarily mean 'anger', the English medical term retained its connection to the disease. The English words 'choleric' and 'choler' (though somewhat archaic) also relate to anger or irritability, preserving the ancient Greek connection between bile and angry temperament.