O perito considerou essa hipótese.

Perito means expert or specialist, often in a formal, technical, legal, or forensic context.

In Portugal, you are likely to see it in contexts such as:

• perito forense = forensic expert
• perito judicial = court-appointed expert
• perito em seguros = insurance assessor/expert

It is a real and common word, but it sounds more formal and professional than a general word like especialista.

Portuguese often uses the definite article where English might not.

So:

• O perito considerou essa hipótese. = The expert considered that hypothesis.

Using o makes the noun specific: it refers to a particular expert already known from the context.

Without the article, perito would usually sound less natural here unless it appeared in a special structure, such as a headline or a very condensed style.

Considerou is the pretérito perfeito do indicativo, which is the normal past tense used for a completed action.

It comes from the verb considerar = to consider.

Conjugation:

• eu considerei
• tu consideraste
• ele/ela/você considerou
• nós considerámos (European Portuguese spelling and stress)
• vós considerastes
• eles/elas/vocês consideraram

In this sentence, considerou means considered.

Because considerar is an -ar verb, and in the third person singular of the simple past (pretérito perfeito), regular -ar verbs end in -ou.

Examples:

• falar → falou
• pensar → pensou
• considerar → considerou

So considerou means he/she considered or you considered (formal você), depending on context.

In European Portuguese, demonstratives usually reflect distance or perspective:

• esta = this, near the speaker
• essa = that, near the listener or just not associated with the speaker
• aquela = that over there, farther away from both

So essa hipótese usually means that hypothesis.

In real usage, the distinction can also depend on discourse context, not only physical distance. For example, essa hipótese may refer to an idea already mentioned by someone else.

For an English speaker, the safest basic match is:

• esta = this
• essa = that

Sometimes, yes, depending on context and translation style.

Although the basic meaning of essa is that, English does not always preserve the same distance distinctions as Portuguese. In a real translation, essa hipótese might occasionally be rendered as this hypothesis if that sounds more natural in English.

But as a learner, it is best first to understand:

• esta → this
• essa → that

Then later you can notice when translation becomes more flexible.

Because hipótese is a feminine noun in Portuguese:

• a hipótese
• essa hipótese

Its gender is grammatical, so the determiner and any adjective must agree with it.

Examples:

• essa hipótese interessante
• a hipótese principal

A useful thing to remember is that many nouns ending in -e can be either masculine or feminine, so you often need to learn the article together with the noun:

• o teste
• a hipótese

The stress falls on the second syllable:

hi-PÓ-te-se

The written accent in hipótese shows that stress.

Very roughly for an English speaker in European Portuguese:

• hi = like hee
• pó = stressed syllable, something like PO
• te-se = lighter ending syllables

The ó is important because it marks the stressed vowel.

A rough European Portuguese pronunciation is:

u puh-REE-tu kun-si-deh-ROH EH-suh ee-POH-tuh-zuh

A few helpful notes:

• O before a consonant is often pronounced like u
• perito has stress on ri: pe-RI-to
• considerou has stress on the last syllable: con-si-de-ROU
• essa in European Portuguese often sounds closer to EH-suh
• hipótese has stress on PÓ

This is only an approximation for English speakers, but it points you in the right direction.

This sentence uses the most neutral Portuguese word order:

Subject + verb + object

• O perito = subject
• considerou = verb
• essa hipótese = direct object

Portuguese can change word order for emphasis, but this version is the standard, natural one.

For example:

• Essa hipótese, o perito considerou.

That is possible, but it sounds marked or contrastive, as if emphasizing that hypothesis in particular.

Yes. Depending on context, considerar can mean:

• to consider
• to regard
• to deem
• to think of as

Examples:

• Considero-o um bom profissional. = I consider him a good professional.
• O tribunal considerou válida a prova. = The court deemed the evidence valid.

In your sentence, the meaning is the straightforward one: the expert considered the hypothesis.

Because essa hipótese is the direct object of considerou.

The verb considerar normally takes a direct object directly:

• considerar uma hipótese
• considerar uma possibilidade
• considerar um argumento

So:

• O perito considerou essa hipótese.

No preposition is needed.

English works the same way here: considered that hypothesis.

Not by itself.

O perito considerou essa hipótese. only says that the expert considered or took into account that hypothesis.

If you want regarded it as valid/plausible/likely, Portuguese usually adds more information, for example:

• O perito considerou essa hipótese válida.
• O perito considerou essa hipótese plausível.

So the original sentence does not automatically imply approval or belief; it only says the hypothesis was considered.

Yes, usually.

Hipótese is more precise and often more academic, scientific, technical, or analytical than ideia.

Compare:

• essa ideia = that idea
• essa hipótese = that hypothesis

In a legal, scientific, investigative, or expert context, hipótese is often the better choice.

Yes. It sounds natural, especially in formal or written contexts such as:

• news reports
• court or police contexts
• academic writing
• technical discussion

In everyday casual conversation, people might choose simpler wording depending on the situation, but the sentence itself is perfectly normal and idiomatic in European Portuguese.