on earth, the heck, in the world (used for emphasis and to express incredulity)

whole / entirety / unity

human, person, human being / personality, character / (Buddhism) literally meaning: "human society", referring to one of the six realms of reincarnation in Buddhist cosmology.

(archaic) the world in which people live; the world, society

(dated, rare) a place devoid of people

nature / spontaneity

what on earth / in the world / the heck / the hell / on earth / the devil / the fuck / in the hell / the fuck / indeed

natural / spontaneous

naturally / spontaneously / rarely / coincidentally

doing something later, producing something later; that which is done or made later / posterity, those who will live later, people in the future