The Spanish word 'inicio' (meaning 'beginning') comes from the Latin word 'initium' with the same meaning. 'Initium' itself was derived from the Latin verb 'inire' meaning 'to enter' or 'to begin', which was formed by combining two Latin elements: the prefix 'in-' meaning 'into' and the verb 'ire' meaning 'to go'. This combination literally meant 'to go into' which evolved to mean 'to enter' or 'to begin'.

Several common Spanish words share this etymology with 'inicio', including 'inicial' (initial), 'iniciar' (to initiate/begin), and 'iniciativa' (initiative). All these words maintain the core meaning related to beginnings or starting something.

English speakers can easily connect 'inicio' to several familiar English words that come from the same Latin root, such as 'initial', 'initiate', 'initiative', and 'initiation'. All these words preserve the original concept of beginning or starting something new. The connection between Spanish 'inicio' and these English words can help English speakers remember its meaning.