The Spanish verb 'mentalizar' comes from combining the adjective 'mental' with the verb-forming suffix '-izar' (meaning 'to make into'). The adjective 'mental' comes from Latin 'mentalis', which was formed from the Latin noun 'mens' (meaning 'mind') and the suffix '-alis' (meaning 'relating to'). So literally, 'mentalizar' means 'to make mental' or 'to make aware in the mind', which evolved to mean 'to make (someone) aware' or 'to prepare (someone) mentally' in modern Spanish.

Some simpler related Spanish words include 'mental' (mental), 'mente' (mind), and 'mentalmente' (mentally). These all share the same Latin root 'mens' meaning 'mind'. While 'mental' describes something relating to the mind, 'mentalizar' takes it a step further by making it an action - the process of making someone mentally aware or prepared.

English speakers can connect 'mentalizar' to many familiar words like 'mental', 'mentality', 'mind', and 'mention'. These all trace back to the same Latin root 'mens' meaning 'mind'. The English suffix '-ize' (as in 'visualize' or 'memorize') serves the same function as Spanish '-izar', both creating verbs that mean 'to make into' something. So 'mentalizar' follows a similar pattern to English words like 'mentalize', though this exact form is less common in English.