Learn Turkish: O gürültülü sesi duymadık. - We didn't hear that noisy sound.

The verb root is duy- (to hear). We add the negative suffix -ma, the past tense suffix -dı, and the personal ending -k for 'we'. Put together, duymadık means 'we did not hear'.

Why is there an -i at the end of sesi?

Ses means 'sound' or 'voice'. We add the accusative case suffix -i because it is the specific direct object of the verb. Since we are pointing out a specific sound with the word o (that), ses must have this specific object marker.

Does the word gürültülü come from a shorter word?

Yes, it comes from the noun gürültü, which means 'noise'. Adding the suffix -lü (which means 'with') turns it into the adjective 'noisy'. It takes the -lü form to match the rounded vowels in gürültü according to vowel harmony rules.

Why is the word for 'we' missing from the sentence?

In Turkish, you do not always need to say the subject pronoun like biz (we) because the verb already shows who is doing the action. The -k at the end of duymadık clearly means 'we', so saying biz at the start is left out unless you want to add special focus on it.