The Spanish word 'tarifa' (meaning 'tariff' or 'rate') comes from Andalusi Arabic 'ta'rífa', which meant 'tariff' or 'price list'. This word developed from Classical Arabic 'taʿrifah' meaning 'definition' or 'list of prices', which in turn came from 'taʿrif' meaning 'definition' or 'notification'. The word evolved both in form and meaning as it passed from Classical Arabic through Andalusi Arabic (the variety of Arabic spoken in medieval Islamic Spain) and finally into Spanish, maintaining its connection to the concept of prices and rates throughout its journey.

While 'tarifa' itself is a commonly used Spanish word, it's worth noting that Spanish doesn't have many other widely used words that share this Arabic root, as it entered the language as an isolated borrowing during the period of Islamic rule in Spain.

English speakers might recognize the connection to the word 'tariff', which comes from the same Arabic source through Italian 'tariffa'. Both Spanish 'tarifa' and English 'tariff' maintain very similar meanings related to rates, prices, and duties, showing how this Arabic-origin word spread throughout European languages while keeping its core meaning of a standardized price or rate.