The Spanish word 'entrega' (meaning 'delivery') comes from the verb 'entregar' ('to deliver' or 'hand over'), which traces back to the Latin word 'integrare' meaning 'to make whole' or 'restore'. This Latin verb was formed from 'integer' ('untouched, whole') which itself was created using the negative prefix 'in-'.

The semantic evolution from 'making whole' to 'delivering' can be understood as the act of completing or making whole a transaction by handing something over.

A closely related and commonly used Spanish word is 'íntegro' meaning 'complete' or 'honest', which more directly preserves the original Latin meaning of 'whole' or 'untouched'. The verb 'integrar' meaning 'to integrate' or 'to make complete' is also related and frequently used in Spanish.

English speakers might recognize the connection to words like 'integral', 'integrate', and 'integrity', all of which come from the same Latin root 'integer'. While these English words maintained meanings closer to the original sense of 'wholeness' or 'completeness', the Spanish 'entrega' evolved to specifically refer to the act of delivery or handing over.