The Spanish preposition 'desde' (meaning 'from' or 'since') has an interesting formation from Latin elements. It developed from a combination of Latin prepositions: 'de' (meaning 'from') and 'ex' (meaning 'out of'). The word appears to have undergone a process where these Latin prepositions merged and evolved, with an additional reinforcement of 'de', resulting in the current form 'desde'. This type of combination and reinforcement of prepositions was not uncommon in the development from Latin to Romance languages, as speakers sought to make meanings more explicit and emphatic.

The Spanish preposition 'de' is a simpler, more basic relative of 'desde'. While 'de' simply means 'of' or 'from', 'desde' is more specific, indicating a starting point in either space ('from') or time ('since'). Understanding this relationship can help learners grasp how 'desde' functions as a more precise version of 'de' when indicating origins or starting points.

While English doesn't have direct cognates of 'desde', we can find some related words through the Latin 'ex' component. English words like 'exit' (going out), 'exterior' (outside), and 'external' (outer) all share this same Latin root 'ex' meaning 'out of'. Understanding this connection can help English speakers remember that 'desde' often indicates movement or progression from a starting point, just as 'exit' indicates movement from inside to outside.