Ma’anar ƙamus na “mutumin duniya” shi ne mutum wanda ya kware kuma ya ƙware a cikin al’amuran duniya, musamman a yanayin zamantakewa da al’adu. Irin wannan mutumin sau da yawa yana tafiya sosai, yana karantawa, kuma yana da masaniya game da al'adu da al'adu daban-daban, kuma yana iya dacewa da sababbin yanayi da yanayin zamantakewa cikin sauƙi. Ana amfani da kalmar sau da yawa don bayyana mutumin da yake da faffadan ra’ayi game da rayuwa, kuma yana iya yin mu’amala da mutane daga sassa daban-daban da na rayuwa.