How do you say that a technological system (like a car or a telephone system) is reliable? E.g. not prone to downtime, robust, starts in the winter every time?
I thought about:
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Confiable sounds a bit odd to me, but it can be a valid option. I am from Spain, and personally I'd prefer fiable:
- Adj. Que ofrece seguridad o buenos resultados.
You can even say that the system is seguro:
- Adj. Que no falla o que ofrece confianza.
In this case you must make sure that the chosen word to represent the concept is widely used by your target, and that will depend on the target's country.