The Spanish verb 'fechar' (to date) comes from the Spanish noun 'fecha' (date), which itself derives from Latin 'facta', the feminine form of the past participle of 'facere' meaning 'to make' or 'to do'. The verb was formed by adding the Spanish infinitive suffix '-ar' to 'fecha'. The semantic evolution from 'made/done' to 'date' likely occurred because dates were used to mark when something was made or done, particularly in official documents.

Several common Spanish words share the Latin root 'facere', including 'hacer' (to do/make), 'hecho' (fact, deed), and 'fácil' (easy). While 'fechar' specifically evolved to mean 'to date', these related words maintained meanings closer to the original Latin sense of 'making' or 'doing'.

English speakers might recognize the connection to words like 'fact', 'factory', and 'facile', which all come from the same Latin root 'facere'. Just as 'fact' represents something that was 'made' or 'done' (in the sense of being real or actual), 'fecha' represents when something was 'made' or 'done' (in the sense of a date).