Eu não tive culpa pelo atraso.

Tive is the 1st person singular form of the verb ter in the preterite tense.

• ter = to have
• eu tive = I had

In this sentence, ter culpa is a common expression meaning to be at fault or to be to blame.

So Eu não tive culpa literally means I didn’t have fault, but more naturally in English it means It wasn’t my fault or I wasn’t to blame.

Portuguese often expresses this idea with the noun culpa rather than a direct verb equivalent to English to blame.

Common patterns are:

• ter culpa = to be at fault
• ser culpa de alguém = to be someone’s fault

Examples:

• Eu tive culpa. = It was my fault.
• Eu não tive culpa. = It wasn’t my fault.
• Foi culpa dele. = It was his fault.

So this sentence uses a very natural Portuguese structure, even though it does not match English word-for-word.

In Portuguese, não usually goes directly before the verb it negates.

So:

• Eu tive culpa. = I was at fault.
• Eu não tive culpa. = I was not at fault.

This is the normal and expected position for negation in simple sentences.

Yes, you can absolutely say:

• Não tive culpa pelo atraso.

Portuguese often drops subject pronouns when the verb form already makes the subject clear. Since tive clearly means I had, eu is optional.

Including eu can add:

• emphasis
• contrast
• clarity

For example:

• Eu não tive culpa pelo atraso, foi ele.
  = I wasn’t responsible for the delay, he was.

So with eu, the sentence can sound a bit more explicit or emphatic.

Pelo is a contraction of:

• por + o = pelo

Here, culpa por algo or culpa pelo/a/os/as... expresses fault for something.

So:

• culpa pelo atraso = fault for the delay

Why not do atraso?

• do = de + o
• That would suggest a different relationship, not the normal one used here.

With culpa, Portuguese commonly uses por when referring to the thing someone is blamed for:

• culpa pelo erro = fault for the mistake
• culpa pelo acidente = fault for the accident
• culpa pelo atraso = fault for the delay

So pelo atraso is the idiomatic choice.

Pelo is the contraction of:

• por
  • o = pelo

Because atraso is masculine singular, por o atraso becomes pelo atraso.

Other forms are:

• pela = por + a
• pelos = por + os
• pelas = por + as

Examples:

• pela demora = for the delay
• pelos erros = for the mistakes

These contractions are very common in Portuguese and should normally be used.

They are related, but not exactly the same.

• atraso usually means delay, often in the sense of being late or something happening later than expected.
• demora usually means delay too, but can also emphasize the length of time something takes.

In this sentence, atraso is very natural if the idea is that something or someone was late.

Examples:

• O voo teve atraso. = The flight was delayed.
• A demora no atendimento foi grande. = The wait/service delay was long.

So pelo atraso is a very natural choice for for the delay.

The tense changes the meaning.

• tenho culpa = I am at fault / I have fault
• tinha culpa = I was at fault / I used to be at fault / I had fault
• tive culpa = I was at fault / it was my fault, referring to a specific completed situation

In Eu não tive culpa pelo atraso, the speaker is talking about a specific past event: the delay. The preterite is the normal tense for a completed event in the past.

So:

• não tive culpa = I wasn’t to blame for that specific thing that happened

If you said não tinha culpa, it could sound more descriptive, ongoing, or dependent on a larger context.

You could, but it is not exactly the same in tone or naturalness.

• Eu não tive culpa pelo atraso = very natural, common, idiomatic
• Eu não fui culpado pelo atraso = understandable, but sounds more like I was not blamed/considered guilty for the delay or a more formal/passive phrasing

Also, culpado means guilty/blameworthy as an adjective, while culpa is the noun fault/blame.

For everyday Portuguese, não tive culpa is usually the best choice.

Sometimes yes, depending on context, but it is not always the closest translation.

More direct translations are:

• It wasn’t my fault.
• I wasn’t to blame for the delay.

I’m not responsible for the delay can work in some situations, especially if the speaker is denying responsibility. But culpa focuses more on fault/blame than on formal responsibility.

So the best translation depends on context, but It wasn’t my fault is usually the most natural match.

Yes. Culpa can mean:

• fault
• blame
• guilt

The exact meaning depends on context.

In this sentence, culpa most naturally means fault/blame, not emotional guilt.

Examples:

• A culpa foi minha. = It was my fault.
• Sinto culpa. = I feel guilty / I feel guilt.

So in Eu não tive culpa pelo atraso, the meaning is about responsibility for what happened, not a guilty feeling.

Some common alternatives are:

• A culpa não foi minha pelo atraso.
  = It wasn’t my fault about the delay.

• Não foi culpa minha.
  = It wasn’t my fault.

• Eu não fui o culpado pelo atraso.
  = I wasn’t the one at fault for the delay.

• Eu não tive nada a ver com o atraso.
  = I had nothing to do with the delay.

Among these, Não foi culpa minha and Eu não tive culpa pelo atraso are especially common and natural.

Both are possible, but they are used a bit differently.

• culpa minha is very common after the noun:

  • Foi culpa minha. = It was my fault.

• minha culpa is also correct, but can sound more emphatic, literary, or stylistically marked depending on context:

  • A minha culpa foi... = My fault was...

In everyday speech, after culpa, Portuguese often prefers:

• culpa minha
• culpa dele
• culpa dela

So if you want to say my fault, culpa minha is a very useful pattern to learn.

It is neutral and natural. You can use it in:

• everyday conversation
• explanations
• arguments
• workplace situations

It is neither slangy nor especially formal. It works well in most contexts.

For example:

• Eu não tive culpa pelo atraso do projeto.
• Eu não tive culpa pelo atraso na entrega.

So it is a very useful sentence pattern to remember.