The Spanish word 'enfermera' (meaning 'nurse') has an interesting etymology that traces back to Latin. It comes from the Spanish word 'enfermo' (meaning 'sick') combined with the feminine occupational suffix '-era'. The word 'enfermo' itself comes from Latin 'infirmus', which meant 'weak' or 'sick'. This Latin word was formed by combining the negation prefix 'in-' with 'firmus' (meaning 'firm' or 'strong'). So literally, 'infirmus' meant 'not strong' or 'weak', which evolved to specifically mean 'sick' in Spanish. Therefore, 'enfermera' literally means 'woman who takes care of the sick'.

Some related Spanish words that might help you remember 'enfermera' include: 'enfermo' (sick), 'enfermedad' (sickness/disease), and 'enfermería' (nursing/infirmary). All these words share the same root relating to sickness or illness. The masculine form 'enfermero' means 'male nurse'.

English speakers might recognize the connection to words like 'infirm' and 'infirmary', which come from the same Latin root 'infirmus'. An infirmary is a place where sick people are cared for, just as an 'enfermera' is someone who cares for the sick. The word 'firm' in English is also related, coming from Latin 'firmus', though it represents the positive form without the negating prefix.