American vernacular with the same basic meaning as Indeed. Indeedius is a term used to validate ones sentiments in a given subject or conversation.
Person 1: "I'd say that is more like a porcupine then a snake my broheim"
Person 2: "Indeedius my friend, this is a true observation."
Person 2: "Indeedius my friend, this is a true observation."
by HereticalJoeChrist November 18, 2010