earthlyEnglishOxford New American Dictionaryearthly /ˈərTHlē, ˈərθli / ▸ adjective 1 relating to the earth or human life on the earth: water is liquid at normal earthly temperatures. ▪ relating to humankind's material existence as distinct from a spiritual or heavenly one: all earthly happiness is but vanity. 2 [with negative] informal used for emphasis: there was no earthly reason why she should not come too. – DERIVATIVES earthliness /ˈərTHlēnəs, ˈərθlinəs / noun