Learn Turkish: Başkan skandalı yalanlamamış. - The president apparently did not deny the scandal.

It starts with the verb root yalanla (to deny). First, we add the negative suffix -ma, making it yalanlama (not deny). Then we add the reported past suffix -mış. This -mamış combination is the standard way to express that someone apparently didn't do something.

I recognize the word yalan (lie) in yalanlamamış. How are they connected?

Great catch! Yalan is the noun for a lie. By adding the verb-forming suffix -la, it becomes yalanlamak, which means to call something a lie, or to deny. Then we add the negative and tense suffixes to get our final verb.

Why is it skandalı instead of just skandal?

The extra -ı at the end of skandal is the accusative case suffix. We use this because the scandal is a specific, known thing receiving the action of the verb. Without it, it would sound like the president didn't deny some generic scandal rather than the specific scandal everyone is talking about.

Which word in the Turkish sentence means apparently?

There isn't a separate word for apparently. That meaning comes entirely from the -mış suffix in yalanlamamış. It is the reported past tense, which shows that you are reporting information you heard from someone else, like the news, rather than something you witnessed yourself.