The Spanish verb 'fijar' (meaning 'to fix' or 'to fasten') traces back to the Latin verb 'figere', which meant 'to fix' or 'fasten'. The past participle of 'figere' was 'fixus' meaning 'fixed', which gave rise to the Medieval Latin verb 'fixare'. This evolved into the Spanish adjective 'fijo' (fixed), which was then combined with the Spanish verb suffix '-ar' to create the modern verb 'fijar'.

This evolution shows a consistent meaning of fixing or fastening something in place throughout its history, from ancient Latin to modern Spanish.

A closely related and simpler Spanish word is the adjective 'fijo', meaning 'fixed' or 'permanent'. When you see 'fijo' in phrases like 'precio fijo' (fixed price) or 'teléfono fijo' (landline telephone, literally 'fixed telephone'), you can connect it to the action verb 'fijar'. Both words share the core meaning of something being fixed or set in place.

English speakers can easily connect 'fijar' to several common English words that share the same Latin root. The most obvious are 'fix', 'fixed', 'fixture', and 'affix'. All these words maintain the basic concept of fastening or securing something in place. The English word 'fix' has expanded to include additional meanings like 'to repair' or 'to prepare', but its core meaning of 'to make firm or stable' is directly related to the Spanish 'fijar'.