広大な (translations)→ oceanic vast wide
豪華な (translations)→ beautiful fancy grand great handsome lavish rich silken super
豪壮な (translations)→ feudal magnificent
壮大な (translations)→ epic extraordinary gargantuan majestic phenomenal tremendous
堂々たる (translations)→ imposing impressive
堂々とした (translations)→ confident good statuesque