The Spanish word 'afán' (meaning 'eagerness' or 'zeal') has an interesting journey through multiple languages. It originated from the Arabic word 'fanaˀ', which referred to 'exhaustion from passion'. This Arabic term was borrowed into Vulgar Latin as 'affannare', meaning 'to give oneself trouble'. The word then evolved into the Spanish verb 'afanar' (meaning 'to toil' or 'to work eagerly'), and finally gave rise to the noun 'afán', which captures the sense of eager determination or zealous effort.

A closely related Spanish word is the verb 'afanar', which means 'to toil' or 'to work eagerly'. While 'afán' is the noun describing the feeling of eagerness or zeal, 'afanar' is the action of working hard with that same passionate determination. You might hear 'afanarse' (the reflexive form) meaning 'to strive' or 'to trouble oneself'.

While there aren't any common English words directly related to 'afán' through the same Arabic root, understanding its connection to the concept of passionate exhaustion and eager determination can help English speakers grasp its meaning. The intensity of feeling captured in 'afán' might be compared to English words like 'zeal' or 'fervor', though they come from different etymological roots.