The Spanish verb 'acomodar' (to accommodate, to adjust) comes from the Latin verb 'accommodare', which was formed by combining three elements: the prefix 'ad-' meaning 'toward', 'con-' meaning 'together', and 'modus' meaning 'measure or manner'. When these elements merged, they created a word that literally meant 'to fit or adapt something toward a measure together'. The Spanish verb was formed by adding the standard '-ar' verb ending to the modified Latin base.

Some related Spanish words include 'modo' (way, manner) and 'cómodo' (comfortable), which both come from the same Latin root 'modus'. You can see how the basic idea of 'measure or manner' evolved into these related concepts - 'modo' retained the original meaning of 'manner', while 'cómodo' developed from the idea of something being 'fitting' or 'suitable' to mean 'comfortable'.

English speakers might recognize the connection to words like 'accommodate', 'mode', 'modulate', and 'moderate', all of which share the Latin ancestor 'modus'. 'Accommodate' is particularly close in both meaning and form to 'acomodar', as they're essentially cognates. The English word 'mood' also comes from this same root, though its meaning has specialized to refer to a state of mind or feeling.