earthshakingEnglishOxford New American Dictionaryearthshaking /ˈərTHˌSHākiNG, ˈərθˌʃeɪkɪŋ / ▸ adjective (of music or sound) loud and throbbing: earthshaking hard-core metal. ▪ another term for earth-shattering: this is not of earthshaking importance.