caballeroso

adj. gentlemanly, chivalrous; sportsmanlike

= cavalier, gentlemanly, chivalrous, gentlemanlike.
Ex: Special schemes have the advantage that subjects not forming part of the core can be treated in a fairly cavalier fashion, since their importance is likely to be far less than that of core material.
Ex: The business of supplying books to libraries has encouraged a gentlemanly and ethical relationship between the different suppliers.
Ex: The sketchbook features drawings illustrating the liberal arts (including personifications of the planets), the chivalrous life (including hunting and love), household remedies, mining and smelting, and war technology.
Ex: Mr. Bingley was good-looking and gentlemanlike: he had a pleasant countenance, and easy, unaffected manners.
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* poco caballeroso = ungentlemanlike.