The Spanish verb 'adivinar' (meaning 'to guess' or 'to divine') comes from the Latin 'addivinare', which meant 'to divine' or 'to foretell'. This Latin word was formed by combining the prefix 'ad-' (meaning 'toward') with 'divinare' (meaning 'to divine, prophesy'). The word 'divinare' itself was derived from 'divus' (meaning 'god' or 'divine') and the suffix '-inus' (meaning 'belonging to'). This etymology reflects how the act of divination or prophecy was historically associated with divine or godly powers, though the modern Spanish word has evolved to include the more general meaning of 'to guess'.

Some related Spanish words include 'divino' (divine), 'divinidad' (divinity), and 'adivinanza' (riddle). All these words share the same Latin root 'divus' relating to divinity or godliness. While 'divino' maintains the direct connection to the divine, 'adivinar' and 'adivinanza' have evolved to relate more to the act of guessing or solving puzzles, though they still carry traces of their mystical origins.

English speakers might recognize the connection to words like 'divine' and 'divinity', which come from the same Latin root 'divus'. While the English word 'divine' primarily maintains its religious or godly connotations, it can also mean 'to discover by intuition or insight', similar to the Spanish 'adivinar'. The word 'divination' is even closer in meaning to the original Latin sense of prophetic or magical prediction.