chama ちゃま - Honorific

In Japanese, ~chama ～ちゃま is a mix of two honorific suffixes: the diminutive ~chan ～ちゃん and the reverent ~sama ～さま. It's not normally used in Japanese.

One way it can be used is in obocchama お坊ちゃま. Maids, butlers, servants who serve a house and its master, sometimes refer to the son and daughter of the house as obocchan お坊ちゃん and ojousama お嬢様, respectively.

The word obocchama would be trying to match ~sama ～さま of ojousama in the word obocchan.

Manga: Bocchan to Maid, 坊っちゃんとメイド (Chapter 11, 小さな冒険(3))

• waa! bocchama!
  わぁ！坊っちゃま！
  Wah! [Young master]!
• atarashii oyoufuku desu ka?
  新しいお洋服ですか？
  Are [those] new clothes?
• ...maa na
  ･･･まあな
  [Yeah].
• a! {suujitsu-mae
  shitateya-san wo
  oyobi shite
  oodaameido
  shita} mono desu ne!
  あ！数日前仕立て屋さんをお呼びしてオーダーメイドしたものですね！
  Ah! [It's] the one [that] {[you] custom-ordered some days ago when you called the tailor}, right?!