Learn Turkish: Pardon, adınızı duymadım. - Sorry, I did not hear your name.

The word is built in two steps from the root ad (name). First, we add the formal 'your' ending to get adınız (your name). Then, because 'your name' is the direct object of the verb 'hear', we add the accusative case marker ı to the end, making it adınızı.

Could adınız also mean plural 'your names'?

Yes, grammatically adınız can mean 'your names' (when speaking to multiple people) or 'your name' (using the formal singular 'you'). In this context, it is almost certainly the formal singular, showing politeness to someone whose name you didn't catch.

What is the exact breakdown of the verb duymadım?

It breaks down as duy (the root verb for hear) + ma (the negative marker) + dı (the past tense marker) + m (the personal ending for 'I'). Together, they form 'I did not hear'.

Why use Pardon here instead of Özür dilerim?

Pardon is a common, everyday way to say 'sorry' or 'excuse me' for minor situations, like asking someone to repeat themselves. Özür dilerim is usually reserved for a deeper, more serious apology.