The Spanish word 'espera' (meaning 'wait' or 'hope') comes from the Spanish verb 'esperar'. This verb derives from the Latin verb 'sperare' meaning 'to hope', which itself comes from the Latin noun 'spes' meaning 'hope'. Over time, the meaning in Spanish evolved to encompass both hoping and waiting, as waiting often involves hoping for something to happen.

The verb form 'esperar' is actually more common in Spanish than the noun 'espera'. You might already know phrases like 'Espérame' (wait for me) or 'Espero que...' (I hope that...). Both the verb and noun maintain this dual meaning of hoping and waiting in Spanish.

While English doesn't have any common everyday words directly related to 'espera', we do have some academic or scientific terms that share the same Latin root. For example, 'despair' (from Latin 'desperare', meaning 'to lose hope') is essentially the opposite of 'sperare'. We also have words like 'prosper' (originally meaning 'to do well according to one's hopes') and 'desperate' (having lost hope). The medical term 'vesper' (evening) is also related, as it originally referred to the evening star that people hoped to see as a sign of approaching night.