Yetkili uydurulan söylentiyi hemen yalanladı.

A natural word-by-word breakdown is:

• Yetkili = the official / an official
• uydurulan = made up / fabricated / that was invented
• söylentiyi = the rumor as a definite direct object
• hemen = immediately
• yalanladı = denied

So the structure is basically:

[Subject] [Object + modifier] [Adverb] [Verb]

That is very normal in Turkish.

Here, yetkili is being used as a noun, meaning official, authority figure, or authorized person.

It can also be an adjective in other sentences, for example:

• yetkili kişi = authorized person
• yetkili makam = competent authority

But in your sentence, it stands alone, so it means something like:

• the official
• an official

Which one you choose in English depends on context, because Turkish does not have articles like the and a/an.

Uydurulan comes from the verb uydurmak, which means to make up, to invent, or to fabricate.

It is formed like this:

• uydur- = verb stem
• -ul- = passive marker
• -an = participle suffix

So uydurulan literally means:

• that was made up
• that was fabricated

In this sentence, it modifies söylenti:

• uydurulan söylenti = the rumor that was made up / the fabricated rumor

Because Turkish usually does not use relative words like English that, which, or who in this kind of structure.

Instead, Turkish uses a participle before the noun.

So English:

• the rumor that was made up

becomes Turkish:

• uydurulan söylenti

Literally, Turkish says something more like:

• made-up rumor
• fabricated rumor

This is one of the most important patterns in Turkish grammar: a verb form can come before a noun and describe it directly.

Because it is the definite direct object of the verb yalanladı.

Turkish often marks a specific direct object with the accusative case. Here:

• söylenti = rumor
• söylentiyi = the rumor / that specific rumor

The ending is -(y)i here because the noun ends in a vowel:

• söylenti + yi

The y is just a buffer consonant to connect the noun and the ending smoothly.

Because Turkish normally leaves the subject in its basic form, while the definite direct object often gets the accusative ending.

So in this sentence:

• Yetkili = subject
• söylentiyi = direct object

That is why only söylenti gets an extra case ending.

This is a very common pattern in Turkish:

• Adam kitabı okudu = The man read the book
• Kadın kapıyı açtı = The woman opened the door

Yalanladı is in the simple past tense.

It breaks down like this:

• yalanla- = to deny / to call false
• -dı = past tense

So yalanladı means:

• he denied
• she denied
• the official denied

Turkish verbs do not need separate words like he or she if the subject is already given.

Because Turkish is very often a subject–object–verb language.

So instead of English order:

• The official immediately denied the fabricated rumor

Turkish naturally prefers:

• The official the fabricated rumor immediately denied

That sounds strange in English, but it is normal in Turkish.

The verb often comes at or near the end, especially in neutral written style.

The word order can change, but the version you have is very natural.

Turkish word order is flexible because case endings show grammatical roles. Different orders create different emphasis.

For example, these are all possible in the right context:

• Yetkili uydurulan söylentiyi hemen yalanladı.
• Yetkili hemen uydurulan söylentiyi yalanladı.
• Uydurulan söylentiyi yetkili hemen yalanladı.

The basic meaning stays similar, but the focus changes. In your sentence, the order is neutral and clear.

No. Uydurulan is passive, so it tells you that the rumor was made up, but it does not say by whom.

So the sentence does not mean that the official made it up. It only says that the official denied a rumor that had been fabricated.

If Turkish wanted to say who made it up, it would need a different structure.

Either can be correct, depending on context.

Turkish has no articles like the and a/an, so yetkili by itself does not force one choice.

In English:

• the official sounds right if the official is already known in the conversation
• an official sounds right if this is the first mention

So both are possible translations of the Turkish sentence.

Because yalanlamak specifically means to deny as false, especially with things like:

• statements
• claims
• rumors
• reports

So söylentiyi yalanladı is a very natural combination.

By contrast, reddetmek often means to reject or to refuse, and it does not always carry the same sense of saying something is false.

So here, yalanladı is the most natural choice for denied the rumor.