"TACAÑO" IN ENGLISH?
It took me a while to learn this word in Spanish but it is useful so it is probably worth knowing in English too. Probably the best translation is the word "stingy".
So, you can say: "My friend is very stingy because he never wants to pay for anything". Another alternative is "tight-fisted".
Hope that helps!
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Soy el director de Daniel Smith + Partners. Tengo más de 10 años de experiencia enseñando inglés a españoles.