The Spanish word 'posible' comes from the Latin word 'possibilis', meaning 'possible'. The Latin 'possibilis' was formed by combining two elements: the verb 'posse' meaning 'to be able' and the suffix '-ibilis' meaning 'capable of'. When these combined, they created a word that literally meant 'that which is able to be done' - in other words, 'possible'. This word was then borrowed into Spanish, where it evolved into the modern form 'posible', maintaining the same meaning.

Some related Spanish words include 'poder' (meaning 'to be able to'), which comes from the same Latin root 'posse'. You might also recognize 'imposible' (impossible) and 'posibilidad' (possibility), which are part of the same word family. Understanding this connection can help you remember that 'posible' relates to things that one is able to do or that can happen.

The English word 'possible' is a direct cousin of Spanish 'posible', as both descend from Latin 'possibilis'. Other related English words include 'potent' (meaning powerful or capable), 'potential', and 'possibility', all of which trace back to the same Latin root 'posse' meaning 'to be able'. The similar spelling and identical meaning between English 'possible' and Spanish 'posible' makes this an easy word for English speakers to remember.