onthoveisalgia

This is a composite Greek - Norwegian word that describes the feeling of emptiness and lack of meaning that people who think too much may experience while confronting raw realities for example surfing through the Urban Dictionary.
From the Greek, genitive: of being(part. of: to be) And veisalgia the Norwegian 'kveis' (uneasiness following debauchery) + the Greek 'algia' (pain).