The Spanish word 'entremés' comes from the French word 'entremets', which literally meant 'between dishes' or 'side dish'. The French word was formed by combining 'entre' meaning 'between' with 'mets' meaning 'dish' or 'food'. The word 'mets' itself can be traced back to Latin, deriving from 'missum' (meaning 'sent' or 'put'), which comes from the Latin verb 'mittere' ('to send' or 'to put').

Interestingly, while 'entremés' originally referred to a small dish or appetizer served between courses in Spanish, it also developed a theatrical meaning. It came to refer to a short, comedic interlude performed between the acts of a longer dramatic play - much like how the food entremés was served between main courses. This dual meaning shows how the concept of 'something served between' evolved from food to entertainment.

A common related Spanish word is 'entre', meaning 'between' or 'among', which shares the same French origin as the first part of 'entremés'. Another related word is 'meter', meaning 'to put' or 'to place', which comes from the same Latin root 'mittere'.

Several English words share roots with 'entremés'. The word 'intermission', meaning a break between parts of a performance, comes from the same Latin root 'mittere'. The prefix 'inter-' in English is related to 'entre-' in Spanish and French, both meaning 'between'. We can also see this connection in words like 'intermediate' and 'interval'. The English word 'mission' also comes from Latin 'mittere', showing how the concept of 'sending' evolved in different ways across languages.