More general terms:
* Conquistador: This is the most common and direct translation.
* Explorer: Emphasizes their journeys of discovery.
* Soldier: Focuses on their military role.
* Adventurer: Highlights their daring and risk-taking.
More specific terms:
* Colonizer: Emphasizes the establishment of settlements and control over land.
* Imperialist: Focuses on the expansion of the Spanish Empire.
* Hidalgo: Refers to a member of the Spanish nobility, often involved in conquest.
* Caballero: Refers to a knight, often associated with chivalry but also used to describe Spanish soldiers.
* Adelantado: A Spanish official with specific administrative and military authority, often appointed to lead expeditions.
Terms with a negative connotation:
* Invader: Highlights the forceful nature of their actions.
* Oppressor: Emphasizes the suffering inflicted on indigenous populations.
* Ruthless: Describes their cruelty and lack of mercy.
The best word to use will depend on the specific context and the tone you want to convey.