cool [cooler, coolest](colloquial: of a person, knowing what to do and how to behave in any situation) adjective [UK: kuːl] [US: ˈkuːl]His car is really cool. = Su coche es realmente estupendo.
copacetic(fine, excellent, going just right, swell) adjective
stupendous(of stunning excellence) adjective [UK: stjuː.ˈpen.dəs] [US: stuː.ˈpen.dəs]It is a stupendous project. = Es un proyecto estupendo.
terrific(extremely good) adjective [UK: tə.ˈrɪ.fɪk] [US: tə.ˈrɪ.fɪk]John looks terrific. = John se ve estupendo.
wonderful(excellent, extremely impressive) adjective [UK: ˈwʌn.də.fəl] [US: ˈwʌn.dər.fəl]Pets are wonderful. = Las mascotas son estupendas.