fitness Pronunciation: /ˈfɪtnəs; ˈfɪtnɪs/Translate fitness | into French | into German | into Italian Spanish translation of fitnessn u 1 (healthiness) salud (f) (physical) fitness = (buena) forma (f) física 2 (suitability) aptitud (f)fitness in other Oxford dictionaries Definition of fitness in the British & World English dictionary Definition of fitness in the US English dictionary