Learn Turkish: Kürsüde kekelemekten yoruldu. - He got tired of stuttering on the podium.

In Turkish, the verb yorulmak (to get tired) takes the ablative case for the thing you are getting tired of. You can think of it as getting tired from something. So, to say 'got tired of stuttering', we take the infinitive kekelemek (to stutter) and add the ablative suffix, resulting in kekelemekten.

Why does the ablative suffix take the form -ten here instead of the usual -den?

This happens because of consonant mutation. The infinitive kekelemek ends in k, which is a voiceless consonant. When a suffix starting with d attaches to a voiceless consonant, the d hardens into a t. This turns -den into -ten.

The root of yoruldu is yorulmak. Is this related to another verb?

Yes, the base verb is yormak, which means to tire someone or something out. By adding the suffix -ul, it turns into yorulmak, which means to get tired yourself. The -du at the end is the simple past tense, making it 'got tired'.

Could we say kürsünün üzerinde instead of just kürsüde for 'on the podium'?