with time running the ironic shadow of the word has
vanished, turning into a funny word, the own meaning also lost
the element "not learning" in today's dictionaries omnibus -human, is basically a man having a lot of intelligence of random work fields; specialist of everything.
long story short, youd call someone a omnibus sarcastically when someone thinks they are all knowing and peak intelligence
dude1: man this game is so bad, it used to be better 2 years ago
dude2:the game is a lot better than it was back then and your opinion is wrong
dude1: fuckwit, i got
817 hours
on the game for the past 3 years and u tryna say im wrong?
*dude1 on his profile:* -rep dude thinks hes all knowing, mf omnibus
speakin right there