Presuming with だろう and でしょう

Presuming or supposing something, with no particular information or evidence to back up that position, is expressed by appending だろう (from だ) or でしょう (from です) to a noun, verb, or adjective. As an expression, it has the meaning of “I wonder” or “don’t you agree?”

See Also

Further Reading

  • Kamiya, Taeko. “Expressing Conjecture and Hearsay, and Quoting People.” Japanese Sentence Patterns for Effective Communication, Kodansha, 2005, p. 217
  • Makino, Seiichi and Michio Tsutsui. “Main Entries.” A Dictionary of Basic Japanese Grammar, The Japan Times Ltd., 1989, pp. 100–102

Examples of だろう

Is the Order a Rabbit? » Volume 1 » Page 18 (Left) » Panel 1

「そりゃティッピーがこの(みせ)のマスコットだからだろう?」

When Cocoa asks why the café is named “Rabbit House”, Rize suggests, “That’s because (the rabbit) Tippy is the shop’s mascot, isn’t it?”

Is the Order a Rabbit? » Volume 1 » Page 18 (Left) » Panel 3

「そりゃまんますぎるだろう

Cocoa suggests a more fitting name for a café with the rabbit Tippy as a mascot would be “Fluffy Café”. Rize says, “That’s too literal, isn’t it?”

Is the Order a Rabbit? » Volume 1 » Page 50 (Right) » Panel 1

(わたし)下宿(げしゅく)(さき)が千夜ちゃんの(いえ)だったらここでお手伝(てつだ)させてもらったんだろうなー」

Since Cocoa helps out at Chino’s house where she’s saying, she considers that if were instead staying at Chiya’s house, “I wonder if I’d be made to help out here?”

Is the Order a Rabbit? » Volume 1 » Page 110 (Left) » Panel 3

(たの)しみ()られてショックだろうな」

Rize explains that Chino’s been acting cold because Cocoa finished off the puzzle Chino has been slowly working on. “It must have been a shock to have her fun be taken away.”

Examples of でしょう

Is the Order a Rabbit? » Volume 1 » Page 18 (Right) » Panel 1

「このお(みせ)名前(なまえ)ラビットハウスでしょう?」

Cocoa asks, “Isn’t this café named Rabbit House?” and asks why they don’t wear bunny ears as part of their uniform.

Is the Order a Rabbit? » Volume 1 » Page 48 (Right) » Panel 2

「こっちのを()べたいでしょうか?」

Chiya’s teahouse mascot rabbit ignores his snack and instead stares at Cocoa’s group. Chino suggests, “Maybe he wants to eat what we have?”

Is the Order a Rabbit? » Volume 1 » Page 51 (Right) » Panel 2

「そうでしょうか?」

Pointing out the plainness of the cups at the Rabbit House café, Cocoa suggest with more colorful cups, people will surely be happier. Chino ponders, “Do you think that’s so?”

Is the Order a Rabbit? » Volume 1 » Page 64 (Right) » Panel 3

「ハーブを使(つか)ったクッキーはいかがでしょう(わたし)()いたんですが…」

After serving tea to her friends, Sharo brings out a plate of cookies. “How about some cookies made with herbs?”