Surah Al-Qiyamah 75:15

وَلَوْ أَلْقَىٰ مَعَاذِيرَهُۥ

Even if he presents his excuses.

Translation: Saheeh International

Tafsir

though he should offer his excuses ma‘ādhīr is the plural of ma‘dhira but following a different pattern from the usual ma‘dhira ma‘ādhir that is to say whatever excuse he offers will not be accepted from him.

Excerpt from Tafsir al-Jalalayn, commentary on 75:15, via Quran.com. The reader has the full commentary and 9 more tafsirs.