Learn Finnish: Mies takeltelee puhujakorokkeella, koska häntä hikoiluttaa. - The man stammers at the podium because he is sweating.

Both mean the person is sweating, but häntä hikoiluttaa uses the subjectless sensation structure you are learning. The person experiencing the physical reaction is put in the partitive case (häntä), and the verb is locked in the 3rd person singular. It feels a bit like saying the situation is making him sweat.

How does the verb hikoiluttaa relate to the normal word for sweating?

It comes from the noun hiki (sweat) and the regular verb hikoilla (to sweat). Adding the -ttaa ending creates a causative verb. In Finnish, these -ttaa verbs are very commonly used for physical urges or sensations without a specific subject performing the action.

How is the word puhujakorokkeella built?

It is a compound of puhuja (speaker) and koroke (podium or platform), plus the adessive ending -lla (on or at). Because koroke is a noun ending in -e, you double the final vowel to get the stem korokkee- before attaching the ending.

Why does takeltelee have a -t- when its dictionary form is takellella?