Grammar Info

N5 Lesson 3: 6/13

だろうRight?, Probably, Isn't it?

Structure

Verb + だろう
Adjective + だろう
Noun + だろう

Details

  • Part of Speech

    Auxiliary Verb

  • Word Type

    Dependent Word

  • Register

    Standard

About だろう

だろう is a conjugated form of , and can also be seen in the contracted form だろ (more casual). だろう expresses that the speaker thinks that something is true (assertion/expectation), and also that the listener would probably agree with them. This comes across like 'right?', or 'probably' in English.

だろう carries exactly the same meaning as でしょう (the polite equivalent). However, due to だ being more casual than です, だろう is also considered to be more casual/masculine than でしょう.

Caution

While だろう is usually used when the speaker has some sort of information that would support their assertion, it can also be used simply when the speaker 'feels' that something is true.

In this kind of sentence that expresses a 'feeling' or 'hunch', だろう comes across as quite low confidence. The speaker's tone of voice will often reveal how confident だろう is.

Examples

--:--

    ここいいだろう

    This place here is good (right?)

    あなただろう

    It's you (right?)

    これペンだろう

    This is a pen. (right?)

    今夜(こんや)(いそが)だろう

    Tonight is busy (right?)

    これ(みず)だろう

    This is water, right?

  • Get more example sentences!

    Premium users get access to 12 example sentences on all Grammar Points.

Self-Study Sentences

Study your own way!

Add sentences and study them alongside Bunpro sentences.

だろう – Grammar Discussion

Most Recent Replies (8 in total)

  • Jake

    Jake

    probably, isn’t it?・right?

    Structure

    • Verb + だろう
    • Adjective + だろう
    • Noun + だろう

    [casual assertive・masculine・conjecture/guess・low confidence・can be based on some information, but doesn’t have to]

    だろ - Contracted Form

    View on Bunpro

  • liannallama

    liannallama

    Hi, I hope this isn’t too dumb–I am having a rough time with grammar I think.

    This says it’s Masculine so that means I wouldn’t say it as a woman, right? I learned “でしょう” as the polite form but is there a casual form for women or would I always use “でしょう”. Thanks for your help.

  • jlam520

    jlam520

    To be on the safe side, especially as a beginner, でしょう should be used whether you’re male or female.

    There are a lot of grammar points that are more formal/feminine and have a casual/masculine form. Generally for beginners, to avoid offending anyone, it’s better to use the formal form. I personally took Japanese classes for years before being taught much casual form stuff.

  • liannallama

    liannallama

    @jlam520 thanks for the tips. I’m a woman so I definitely won’t use this one!

  • Lamster

    Lamster

    Why must we not use a particle after the noun?

  • Lamster

    Lamster

    Unless I’m mistaken, “masculine” expressions simply use the plain forms of verbs. There’s nothing inherently “masculine” about that.

    It’s just that society thinks it’s more acceptable for men to speak in a plain/not particularly polite way, while women are supposed to be polite and cute and cultured and whatever.

    I’d suggest just learning the grammar and then deciding for yourself what’s acceptable to use for you and in which situations. And until you can do that, just use the polite form of everything, regardless of your gender.

  • MZa

    MZa

    The explanation says that だろう is a conjugated form of だ’. I was wondering which form it is. The おう ending would point to the volitional form. Is that right? If it is, the nuance of だろう compared to だ would make sense.

    Edit: i did a bit of research and it seems that my hypothesis is right. Since だ is a shortened である and あろう is the volitional form of ある, であろう would have been shortened in だろう, right?

  • MZa

    MZa

    Since だろう is just a form of だ as said in the new explanation, I guess there is no more reason to use a particle when using the former than when using the later.

  • steffuld

    steffuld

    Hi! If だろう is a conjugated form of だ, and だ is not used with verbs, why can だろう be used with verbs? Is there a reasonable explanation?

    Maybe it was のだろう initially but then の was omitted, or maybe it goes back to である times or something like that?

Got questions about だろう? Join us to discuss, ask, and learn together!

Join the Discussion