The one who is clear of any imperfection, weakness, or shortcoming.

Allah سُبْحَٰنَهُۥ وَتَعَٰلَىٰ is Al-Quddus (in Arabic: ٱلْقُدُّوسُ), meaning the most pure or the most holy. He is so far removed from any imperfection and does not suffer from any shortcomings. The mere mention of being free from defects borders on insult as it implies the possibility of imperfection. He transcends all that we perceive as perfection, and all sublime attributes belong to Him.