1 - It's a secret religion created by a hobo named "Hobo". Hence the name. He also created a race of people, which he named after himself.
2 - A reference to the philosophy of one's passage through life, not unlike that of the transitory nature of a hobo.
3 - The field of study regarding hobos.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 8 words with the pattern --BOI--. That is, seven letter words with 3rd letter B and 4th letter O and 5th letter I. In alphabetical order, they are: amboina ceboids cuboids emboils hoboing hoboism reboils upboils
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern H-B-I-M. That is, seven letter words with 1st letter H and 3rd letter B and 5th letter I and 7th letter M. In alphabetical order, they are: hoboism
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern H--OI-M. That is, seven letter words with 1st letter H and 4th letter O and 5th letter I and 7th letter M. In alphabetical order, they are: heroism hoboism
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 4 words with the pattern H---ISM. That is, seven letter words with 1st letter H and 5th letter I and 6th letter S and 7th letter M. In alphabetical order, they are: handism heroism heurism hoboism
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 5 words with the pattern -O-OIS-. That is, seven letter words with 2nd letter O and 4th letter O and 5th letter I and 6th letter S. In alphabetical order, they are: dodoism hoboism locoism poloist soloist
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern H-BO-S-. That is, seven letter words with 1st letter H and 3rd letter B and 4th letter O and 6th letter S. In alphabetical order, they are: hoboism
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern HOB--S-. That is, seven letter words with 1st letter H and 2nd letter O and 3rd letter B and 6th letter S. In alphabetical order, they are: hobbish hoboism
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 10 words with the pattern -OB--S-. That is, seven letter words with 2nd letter O and 3rd letter B and 6th letter S. In alphabetical order, they are: bobbish dobhash hobbish hoboism jobless mobbish mobbism noblest yobbish yobbism
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 13 words with the pattern H--OI--. That is, seven letter words with 1st letter H and 4th letter O and 5th letter I. In alphabetical order, they are: haloids haloing heroics heroine heroins heroise heroism heroize hikoied hoboing hoboism hyloist hypoing
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern -OB-ISM. That is, seven letter words with 2nd letter O and 3rd letter B and 5th letter I and 6th letter S and 7th letter M. In alphabetical order, they are: hoboism mobbism yobbism
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 21 words with the pattern --B-IS-. That is, seven letter words with 3rd letter B and 5th letter I and 6th letter S. In alphabetical order, they are: babuism babyish biblist bobbish cubbish hobbish hoboism lubfish mobbish mobbism nebbish publish rubbish submiss subsist tubaist tubbish tubfish weblish yobbish yobbism
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 30 words with the pattern H---IS-. That is, seven letter words with 1st letter H and 5th letter I and 6th letter S. In alphabetical order, they are: hagfish haggish haimish handism hardish harpist hashish hawkish heimish hellish hennish herbist heroise heroism heurism hickish highish hippish hobbish hoboism hogfish hoggish hornish hornist hottish huffish hunnish hygeist hyloist hymnist