Dobbiamo accettare la realtà.

Dobbiamo is the present tense, first-person plural form of dovere, which means to have to / must.

So:

• io devo = I must / I have to
• tu devi = you must
• lui/lei deve = he/she must
• noi dobbiamo = we must / we have to
• voi dovete = you all must
• loro devono = they must

In this sentence, dobbiamo tells you that the subject is we, even though noi is not stated.

In Italian, subject pronouns are often left out because the verb ending already shows who is doing the action.

• Dobbiamo already means we must
• So noi dobbiamo is possible, but usually unnecessary

You would include noi only for emphasis or contrast, for example:

• Noi dobbiamo accettare la realtà, non loro.
  We have to accept reality, not them.

After verbs like dovere (must / to have to), Italian normally uses a second verb in the infinitive.

So the pattern is:

• dovere + infinitive

Examples:

• Devo studiare. = I have to study.
• Dobbiamo partire. = We have to leave.
• Dobbiamo accettare la realtà. = We have to accept reality.

This is similar to English must accept or have to accept, where accept stays in its base form.

Italian often uses the definite article more than English does.

Here, la realtà means reality in a general or abstract sense, and Italian normally uses the article with many abstract nouns.

So:

• la realtà = reality

Even though English often says just reality, Italian usually says la realtà.

This is very natural in Italian:

• capire la situazione = understand the situation
• dire la verità = tell the truth
• accettare la realtà = accept reality

The accent in realtà shows that the stress falls on the final syllable: real-TÀ.

It also tells you that the word keeps that final stressed vowel in writing. Many Italian words stressed on the last syllable are written with an accent:

• città
• università
• necessità
• realtà

So the accent is not optional; it is part of the correct spelling.

In this sentence, realtà is grammatically singular and means reality.

It can also be used in the plural, realtà, but the form stays the same in writing. You tell singular vs. plural from the article or context:

• la realtà = reality
• le realtà = realities

So here, la makes it clearly singular.

A simple pronunciation guide is:

dob-BYA-mo at-chet-TA-re la re-al-TÀ

A few useful points:

• bb in dobbiamo is pronounced as a stronger double consonant
• ci before e in accettare sounds like ch in church
• tà in realtà is stressed

A more IPA-style pronunciation is:

/dobˈbjaːmo attʃetˈtaːre la realˈta/

This is the most neutral and natural word order in Italian:

• verb + infinitive + object

So:

• Dobbiamo = we must
• accettare = accept
• la realtà = reality

Italian word order is flexible, but this version sounds standard and unmarked.

Other orders are possible for emphasis, for example:

• La realtà dobbiamo accettare.
  This sounds marked and emphatic, something like It’s reality that we must accept.

For ordinary use, Dobbiamo accettare la realtà is the best choice.

Yes, but it means something slightly different.

• Dobbiamo accettare la realtà = We have to accept reality
• Bisogna accettare la realtà = One has to / It is necessary to accept reality

Bisogna is more impersonal. It talks about necessity in general, without naming who must do it.
Dobbiamo is more direct because it includes the speaker and others: we.

Yes, depending on the tone and exact meaning.

Possible alternatives include:

• riconoscere la realtà = acknowledge reality
• affrontare la realtà = face reality
• prendere atto della realtà = take note of / come to terms with reality

But accettare la realtà is the most direct equivalent of accept reality.

You put non before the conjugated verb:

• Non dobbiamo accettare la realtà.

That means We must not accept reality or We don’t have to accept reality, depending on context.

If you want to be very clear, Italian can distinguish these ideas:

• Non dobbiamo accettare la realtà = We must not accept reality / We are not supposed to accept reality
• Non dobbiamo per forza accettare la realtà = We do not necessarily have to accept reality
• Non siamo obbligati ad accettare la realtà = We are not obliged to accept reality

So the exact English translation depends on the situation.

The dictionary forms are:

• dovere = to have to / must
• accettare = to accept
• realtà = reality

The sentence uses:

• dobbiamo from dovere
• accettare already in the infinitive
• la realtà as a noun phrase

This is useful because when you look words up, you usually need the dictionary form, not the conjugated form.